True discernment means not only distinguishing the right from the wrong; it means distinguishing the primary from the secondary, the essential from the indifferent, and the permanent from the transient. And, yes, it means distinguishing between the good and the better, and even between the better and the best.

Someone I know recently expressed an opinion that surprised and in some ways disappointed me. I said to myself, “I thought he would have more discernment than that.”

The experience caused me to reflect on the importance of discernment and the lack of it in our world. We know that people often do not see issues clearly and are easily misled because they do not think biblically. But, sadly, one cannot help reflecting on how true this is of the church community, too.

Most of us doubtless want to distance ourselves from what might be regarded as “the lunatic fringe” of contemporary Christianity. We are on our guard against being led astray by false teachers. But there is more to discernment than this. True discernment means not only distinguishing the right from the wrong; it means distinguishing the primary from the secondary, the essential from the indifferent, and the permanent from the transient. And, yes, it means distinguishing between the good and the better, and even between the better and the best.

Thus, discernment is like the physical senses; to some it is given in unusual measure as a special grace gift (1 Cor. 12:10), but some measure of it is essential for us all and must be constantly nourished. The Christian must take care to develop his “sixth sense” of spiritual discernment. This is why the psalmist prays, “Teach me good judgment and knowledge” (Ps. 119:66).

The Nature of Discernment

But what is this discernment? The word used in Psalm 119:66 means “taste.” It is the ability to make discriminating judgments, to distinguish between, and recognize the moral implications of, different situations and courses of action. It includes the ability to “weigh up” and assess the moral and spiritual status of individuals, groups, and even movements. Thus, while warning us against judgmentalism, Jesus urges us to be discerning and discriminating, lest we cast our pearls before pigs (Matt. 7:1, 6).

A remarkable example of such discernment is described in John 2:24–25: “Jesus would not entrust himself to them … for he knew what was in a man” (NIV).

This is discernment without judgmentalism. It involved our Lord’s knowledge of God’s Word and His observation of God’s ways with men (He, supremely, had prayed, “Teach me good judgment … for I believe Your commandments,” Ps. 119:66). Doubtless His discernment grew as He experienced conflict with, and victory over, temptation, and as He assessed every situation in the light of God’s Word.

Jesus’s discernment penetrated to the deepest reaches of the heart. But the Christian is called to develop similar discernment. For the only worthwhile discernment we possess is that which we receive in union with Christ, by the Spirit, through God’s Word.

So discernment is learning to think God’s thoughts after Him, practically and spiritually; it means having a sense of how things look in God’s eyes and seeing them in some measure “uncovered and laid bare” (Heb. 4:13).

The Impact of Discernment

How does this discernment affect the way we live? In four ways:

1. It acts as a means of protection, guarding us from being deceived spiritually. It protects us from being blown away by the winds of teaching that make central an element of the gospel that is peripheral or treat a particular application of Scripture as though it were Scripture’s central message.

2. Discernment also acts as an instrument of healing, when exercised in grace. I have known a small number of people whose ability to diagnose the spiritual needs of others has been remarkable. Such people seem able to penetrate into the heart issues someone else faces better than the person can do. Of course, this is in some ways a dangerous gift with which God has entrusted them. But when exercised in love, discernment can be the surgical scalpel in spiritual surgery that makes healing possible.

3. Again, discernment functions as a key to Christian freedom. The zealous but undiscerning Christian becomes enslaved—to others, to his own uneducated conscience, to an unbiblical pattern of life. Growth in discernment sets us free from such bondage, enabling us to distinguish practices that may be helpful in some circumstances from those that are mandated in all circumstances. But in another way, true discernment enables the free Christian to recognize that the exercise of freedom is not essential to the enjoyment of it.

4. Finally, discernment serves as a catalyst to spiritual development: “The mocker seeks wisdom and finds none, but knowledge comes easily to the discerning” (Prov. 14:6, NIV). Why? Because the discerning Christian goes to the heart of the matter. He knows something about everything, namely that all things have their common fountain in God. Increase in knowledge, therefore, does not lead to increased frustration, but to a deeper recognition of the harmony of all God’s works and words.

How is such discernment to be obtained? We receive it as did Christ Himself—by the anointing of the Spirit, through our understanding of God’s Word, by our experience of God’s grace, and by the progressive unfolding to us of the true condition of our own hearts.

That is why we also should pray, “I am your servant; give me discernment” (Ps. 119:125, NIV).

Excerpt from In Christ Alone by Sinclair Ferguson. Download the digital edition free through August 31, 2013.

This article first appeared on the Ligonier Ministries website and is used with their permission. © 2013 Ligonier Ministries