God commanded 4,000 years ago that the sign of the covenant be placed upon males within the household of professing believers. Although the sign of entrance into the covenant people of God has changed from circumcision to baptism (and can now be received by females), God never rescinded his covenant principle concerning households that were to receive the sign and seal of the covenant promise…we are by precept to place the sign of covenant membership in the church upon those who qualify, per the instruction of God – which was never rescinded or abrogated.

Proof-texting versus Theology

It is the hermeneutic of the cults and not that of historic Christianity that seeks merely one or two Bible verses for all true doctrine. This should come as little surprise when we pause to consider that at the heart of Christianity is the church’s confession of the Triune God, which presupposes multi-layered doctrine as it relates to a plurality of persons who share eternally one divine essence. It is no different with the church’s doctrine of Christ, which contemplates distinct natures of divinity and humanity mystically united at the incarnation in the eternal Son of God – yet without confusion, change, division or separation. These foundational doctrines of the Christian faith were derived not from one or two isolated verses but inferred from many passages of Scripture as they relate to a larger whole, a system of doctrine that became most fully developed at the time of the Protestant Reformation and now tightly fits together like pieces of a puzzle. It is by comparing Scripture with Scripture and then doctrine with doctrine that the Reformed tradition has come up with an exhaustive theology that is consistent, coherent and explanatory.

Given the theological nuance of the Holy Trinity and the Incarnation of the Son of God, it should not surprise that infant baptism is not a one or two verse doctrine. After all, infant baptism is in the name of the Holy Trinity and signifies engrafting into the Son of God. All that to say, we should not be put off by the claim, “There is not a single verse in the Bible that teaches infant baptism.” The avoidance of proof-texting in exchange for a fully orbed systematic theology within which a doctrine of infant baptism resides should lead us not to doubt but instill greater confidence in the church’s practice.

It would be hazardous to try to construct a doctrine of infant baptism by looking up verses in a concordance only that pertain to baptism. If baptism is an ordinance or sacrament reserved for those who are to be regarded as God’s people, then we must seek to understand biblical precepts that pertain to marking out the people of God. In other words, the question of who is to be baptized relates to how we should define Christ’s church. If water baptism is the visible rite of passage into the visible people of God, then it must be applied to infants of professing believers if they are to be numbered among the church. Contrariwise, if infants of professing believers are not to be regarded as members of Christ’s church, then the sign of water baptism must be withheld from our covenant children – if they may even be considered covenant children!

Are infants of professing believer’s to be regarded as separate from Christ, or are they to be regarded as Christ’s inheritance? When we are told not to suffer little children from coming to Christ, are we to deny them baptism? Are they to receive Christ’s blessing but not washing? Are they to be considered outside God’s covenant people and, therefore, denied participation in the outward administration of the covenant?

Continuity versus discontinuity

If baptism is reserved for members of Christ’s church, then our doctrine of the church will inform us on the question of who is to be baptized. Under the older economy children of professing believers had an interest in the covenant. When physically possible covenant children were to be marked out as the people of God through the sign and seal of circumcision. Most Baptists and Paedobaptists agree on that point. The question of infant baptism hinges upon whether there has been a change in this Old Testament principle. Are children of professing believers no longer to be regarded as they were under the older economy? Baptists answer that question in the affirmative.

From a Reformed perspective, the Old Testament has both continuity and discontinuity as it relates to the New Testament. With respect to continuity, the old is swallowed up in the new as Christ has fulfilled the covenantal promises of God.

“For as many as are the promises of God, in Him they are yes; therefore also through Him is our Amen to the glory of God through us” (2 Corinthians 1:20).

God’s covenant promises are fulfilled in Christ. In Christ the promises to Israel find their yes and amen, their affirmation and confirmation. Yet in another sense, the many promises of the many covenants are essentially one specific, foundational and singular promise – that is, salvation in Christ. That is why the apostle could say to the saints at Ephesus, “remember that you were at that time separate from Christ, excluded from the commonwealth of Israel, and strangers to the covenants of promise [singular], having no hope and without God in the world” (Ephesians 2:12).

The centrality of Christ in the covenants

• It is the promised Christ who fulfills the Adamic covenant, that the seed of the woman would crush the serpent’s head (Mark 8:31-33; John 12:27-32; 1 John 3:8).
• It is the promised Christ who fulfills the Noahic covenant, that God would uphold and preserve the world (so that he might save the world) (Genesis 9:8-13; Hebrews 1:3; Revelation 4:3).
• It is the promised Christ who fulfills the demands of the Mosaic covenant, as well as the outward administration of the sacrificial system (Deuteronomy 7:6-11; Matthew 5:17; Philippians 3:9).
• It is the promised Christ who fulfills the Davidic covenant, that one from David’s line would sit upon his throne (2 Samuel 7:8-17; Psalm 89:3,4; Matthew 28:18-20; Luke 1:32,33; Acts 2:29-31; 1 Corinthians 15:25; 1 Timothy 6:15).
• It is the promised Christ who fulfills the New Covenant promise. (Jeremiah 31:31-34; Luke 22:19,20)

Given the Christocentric thread of continuity, we may now turn to the continuity of God’s covenant people.

The promise to Abraham and the doctrine of the church

An astute reader may have recognized that the Abrahamic covenant was not mentioned among the covenants listed immediately above. Given the ecclesiastical implications of the Abrahamic covenant of promise, it will be treated separately and in more detail below.

The takeaway from this small section is that there is a continuity from Old Covenant to New Covenant. The common thread throughout the Bible pertains to promise and fulfillment. The centerpiece of Old Testament theology is the promised Messiah who would deliver his people from the bondage of sin and inaugurate a new age in which righteousness would be established in the earth. The covenants of promise did not center upon Israel or a promised land, but rather the various strands of promise converged, finding ultimate fulfillment in Christ alone. Christ is the Seed of the woman who crushes the serpent’s head. It is David’s Son, the ascended Christ, who sits at God’s right hand encircled by the covenant-rainbow first given to Noah as a sign of a delayed judgement (presupposing intended consummation). It is Christ who has fulfilled the demands of the Mosaic law, whereby the ordinances against God’s people were nailed to cross, putting an end to the ceremonial aspect of the Mosaic economy.

Abraham, Seed and Promise

Immediately after the fall, God promised that he would inflict a deep-seated hatred between the seed of the woman and the seed of the serpent. That promise, which would come to fruition being a promise(!), included the good news that the seed of the woman would crush the serpent’s head (Genesis 3:15). Then the Lord of the covenant covered with skins the two who were naked and ashamed (Genesis 3:21).

God later expanded upon his promise with respect to the seed saying that he would establish his covenant between himself and Abraham. Not only would God establish his covenant promise with Abraham, he would also establish it with Abraham’s seed after him. This promise that was made to Abraham and his seed was that God would be a God to them and that they would occupy the land of Canaan for an everlasting possession (Genesis 17:7, 8). In response to the promise of God, which was one of redemption of a people and land for them to occupy, Abraham pleaded that his son Ishmael might live before God in faithfulness (Genesis 3:18). God refused Abraham’s request, saying “as for Ishmael, I have heard thee… but my covenant will I establish with Isaac” not Ishmael (Genesis 17: 20, 21).

God’s promise of deliverance of the seed would come to fruition; yet it did not apply to all of Abraham’s physical descendants. It even applied to those who were not of physical descendants. Abraham was to be the father of many nations, not just one. Notwithstanding, all those who were of the household of Abraham were to receive the sign and seal of the covenant, as if they themselves were partakers of the promise of God. Even more, those within a professing household who did not receive the sign and seal of the covenant were to be considered covenant breakers. This sign of the covenant was so closely related to the covenant that it was called the covenant by the Lord (Genesis 17:10). Consequently, those who had received the sign were to be considered in covenant with God; whereas those who had not received the sign (yet qualified to receive it) were to be treated as covenant breakers. We might say that the invisible church was to be found within the visible church, “out of which there was no ordinary way of salvation” (Acts 2:47b; WCF 25.2). (This principle of household solidarity was not something new, for it was Noah who found grace with God; yet his entire household was saved in the ark.)

When we come to Galatians 3, we learn something quite astounding. The promise was made to a single Seed, who is the Christ; and it is by spiritual union with him, pictured in the outward administration of baptism, that the promise is received by the elect (in Christ). “Now to Abraham and his seed were the promises made. He saith not, And to seeds, as of many; but of one, And to thy seed, which is Christ…For ye are all the children of God by faith in Christ Jesus. For as many of you as have been baptized into Christ have put on Christ… And if ye be Christ’s, then are ye Abraham’s seed, and heirs according to the promise.” (Galatians 3:16, 26-29) The apostle teaches that the covenant promise was established with the Godman – the incarnate Christ, and by covenantal extension with the elect who would be truly, by the Spirit, united to the Seed in baptism.

Although God’s covenant was established from the outset with the elect in Christ, it was to be administered to all who professed the true religion along with their households. The theological distinction of the visible and invisible people of God was well in view, even at the time of Noah and most acutely at the time of Abraham. Although this was the theology of the covenant, the apostle still had to labor the point to the New Testament saints at Rome. After telling his hearers that nothing could separate God’s people from the love of God which is in Christ Jesus (Romans 8:39), the apostle went on to explain how the people of God who had an interest in the covenant could have fallen away. How, in other words, could the people of God become apostate if the promise of redemption had to come to fruition being a promise from God?

The illusive Israel

With this pedagogical background in place, the apostle explained Old Testament Covenant Theology, which is that although God established his covenant only with the elect in Christ, it was to be outwardly administered to the non-elect as long as they were of the household of a professing believer and had not demonstrated visible apostasy. Consequently, not all true Israel are from external Israel (Romans 9:6), just like not all the New Testament church will be saved. “That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed” (Romans 9:8).

In sum, although God treats professing believers as his elect, not all who are to be numbered among the visible people of God are chosen in Christ, i.e. children of promise. God’s promise was that he would redeem a particular people that he would place in his recreation, the church. The church’s final destiny is the consummated New Heavens and New Earth, wherein righteousness dwells. Until God separates the sheep from the goats, the visible church will contain unbelievers and hypocrites. Upon kingdom consummation, the visible church and the elect will be one and the same.

From covenant promise to covenant baptism

As we just saw, under the older economy, although the covenant of promise was established solely with the elect in Christ it was to be administered to the households of professing believers. This means that the children of professing believers were to receive the mark of inclusion and, therefore, be counted among the people of God prior to professing faith in what the sign and seal of the covenant contemplated. Covenant children, even if they were not elect, were to be treated as the elect of God and heirs according to the promise based upon corporate solidarity with a professing parent.

When the apostle addresses the children in his letter to the Ephesians, he does not distinguish them from the corporate body that he has already called saints, faithful in Christ Jesus, and those chosen in Christ. This is the unbroken pattern throughout both testaments. Although God establishes his unbreakable redemptive promise solely with the chosen in Christ, by precept all those who profess the true religion along with their children are to be regarded as among the elect until such time they demonstrate otherwise either in faith or practice, doctrine or lifestyle. Surely the apostle appreciated that not all the assembly in Corinth were necessarily sanctified in Christ Jesus, or effectually called into the fellowship of Christ. Yet the visible church at Corinth was addressed as such and without qualification: “To the church of God in Corinth, to those sanctified in Christ Jesus and called to be his holy people, together with all those everywhere who call on the name of our Lord Jesus Christ—their Lord and ours…” It’s no different when we come to the severe warning passages in Hebrews. After issuing warnings not to fall away from the faith, the author addresses the hearers he just warned as converted believers:

“But, beloved, we are persuaded better things of you, and things that accompany salvation, though we thus speak” (Hebrews 6:9).

“But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul” (Hebrews 10:39).

(This has grave implications for pulpit ministry. After the call to worship the minister is not to address the lost. Congregational worship is not a tent meeting. It’s for God and his saints, a foretaste of the consummated sabbath.)

When we come to the New Testament nothing has changed with respect to the heirs of the promise. The promise remains established with the elect in Christ, as it always was. The question Baptists ask is whether the children of professing believers have somehow lost the privilege of receiving the sign of entrance into the New Testament church. They say YES, which places a burden of proof upon them to demonstrate such a conclusion by good and necessary inference if not explicit instruction.

Here is a link to a Sunday School class presentation of the same material.

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