Even a child is known by his doings, whether his work be pure, and whether it be right.

Wesley's Notes

20:11 Is known - The future disposition of a man may be probably conjectured from his childish manners.

Jamieson-Fausset-Brown Bible Commentary

11. The conduct of children even is the best test of principle (compare Mt 7:16).

Matthew Henry's Concise Commentary

20:7. A good man is not liable to uneasiness in contriving what he shall do, or in reflecting on what he has done, as those who walk in deceit. And his family fare better for his sake. 8. If great men are good men, they may do much good, and prevent very much evil. 9. Some can say, Through grace, we are cleaner than we have been; but it was the work of the Holy Spirit. 10. See the various deceits men use, of which the love of money is the root. The Lord will not bless what is thus gotten. 11. Parents should observe their children, that they may manage them accordingly. 12. All our powers and faculties are from God, and are to be employed for him. 13. Those that indulge themselves, may expect to want necessaries, which should have been gotten by honest labour. 14. Men use arts to get a good bargain, and to buy cheap; whereas a man ought to be ashamed of a fraud and a lie. 15. He that prefers true knowledge to riches, follows the ways of religion and happiness. If we really believed this truth, the word of God would be valued as it deserves, and the world would lose its tempting influence. 16. Those ruin themselves who entangle themselves in rash suretiship. Also those who are in league with abandoned women. Place no confidence in either. 17. Wealth gotten by fraud may be sweet, for the carnal mind takes pleasure in the success of wicked devices; but it will be bitter in the reflection. 18. Especially we need advice in spiritual warfare. The word and Spirit of God are the best counsellors in every point. 19. Those dearly buy their own praise, who put confidence in a man because he speaks fairly. 20. An undutiful child will become very miserable. Never let him expect any peace or comfort. 21. An estate suddenly raised, is often as suddenly ruined. 22. Wait on the Lord, attend his pleasure, and he will protect thee.

Matthew Henry's Whole Bible Commentary

Verse 11

The tree is known by its fruits, a man by his doings, even a young tree by its first fruits, a child by his childish things, whether his work be clean only, appearing good (the word is used ch. 16:2), or whether it be right, that is, really good. This intimates, 1. That children will discover themselves. One may soon see what their temper is, and which way their inclination leads them, according as their constitution is. Children have not learned the art of dissembling and concealing their bent as grown people have. 2. That parents should observe their children, that they may discover their disposition and genius, and both manage and dispose of them accordingly, drive the nail that will go and draw out that which goes amiss. Wisdom is herein profitable to direct.