Galatians 6:4

4 But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another.

Galatians 6:4 In-Context

2 Bear ye one another's burdens, and so fulfil the law of Christ.
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.
6 Let him that is taught in the word communicate unto him that teacheth in all good things.
The King James Version is in the public domain.