Galatians 6:4

Prove his own work. That is, scrutinize his own conduct and motives and evaluate them by “the law of Christ” (v. 2). See on 2 Cor. 13:5. It is the appointed work of the Holy Spirit to assist in this task (see John 16:8–15). It is better for him to give his life a critical examination now than to postpone doing so until it is too late to do so profitably—when the great Judge of all men requires him to appear before the bar of divine justice. This testing process is essential to growth in grace, to the process of sanctification. The Christian does well each day to weigh his inclinations and ambitions in the light of God’s revealed purpose and plan for him, and under the guidance of the Holy Spirit.

Himself alone. When it comes to making an analysis of character it is best for each man to concentrate on himself, not on others. How foolish he would be to labor away to remedy the defects of other men and remain unaware of his own shortcomings. For further comment see on Matt. 7:1–5. How much joy would he ultimately find in contemplating the perfecting of their character, and he himself be found a reprobate? How much better for him to devote his time and efforts to remedying the defects of his own character. Then, in the great judgment day he will have reason to rejoice. See on Gal. 6:7–9.