Galatians 6:4 in the World English Bible
But let each man examine his own work, and then he will have reason to boast in himself, and not in someone else.
Context
3 For if a man think himself to be something, when he is nothing, he deceiveth himself.
4 But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another.
5 For every man shall bear his own burden.