Proverbs 16:2; Proverbs 20:11; Proverbs 21:8

2 All the ways of a man are clean in his own eyes; but the LORD weigheth the spirits.

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

8 The way of man is froward and strange: but as for the pure, his work is right.