I must guard my heart as if everything depended on it. This means that I should keep my heart like a sanctuary for the presence of the Lord Jesus and allow nothing and no one else to enter.

Sometimes people ask authors, “Which of your books is your favorite?” The first time the question is asked, the response is likely to be “I am not sure; I have never really thought about it.” But forced to think about it, my own standard response has become, “I am not sure what my favorite book is; but my favorite title is A Heart for God.” I am rarely asked, “Why?” but (in case you ask) the title simply expresses what I want to be: a Christian with a heart for God.

Perhaps that is in part a reflection of the fact that we sit on the shoulders of the giants of the past. Think of John Calvin’s seal and motto: a heart held out in the palm of a hand and the words “I offer my heart to you, Lord, readily and sincerely.” Or consider Charles Wesley’s hymn:

O for a heart to praise my God!
A heart from sin set free.

Some hymnbooks don’t include Wesley’s hymn, presumably in part because it is read as an expression of his doctrine of perfect love and entire sanctification. (He thought it possible to have his longing fulfilled in this world.) But the sentiment itself is surely biblical.

But behind the giants of church history stands the testimony of Scripture. The first and greatest commandment is to love the Lord our God with all our heart (Deut. 6:5). That is why, in replacing Saul as king, God “sought out a man after his own heart” (1 Sam. 13:14), for “the Lord looks on the heart” (1 Sam. 16:7). It is a truism to say that, in terms of our response to the gospel, the heart of the matter is a matter of the heart. But truism or not, it is true.

Behind the giants of church history stands the testimony of Scripture.

What this looks like, how it is developed, in what ways it can be threatened, and how it expresses itself will be explored little by little in this new column. But at this stage, perhaps it will help us if we map out some preliminary matters in the form of a catechism on the heart:

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