But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another.
Galatians 6:4
King James Version (public domain)
Traditionally attributed to Paul · 1st century AD · Thirteen epistles of the New Testament are traditionally attributed to him
Context
2Bear ye one another’s burdens, and so fulfil the law of Christ.
3For if a man think himself to be something, when he is nothing, he deceiveth himself.
4But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another.
5For every man shall bear his own burden.
6Let him that is taught in the word communicate unto him that teacheth in all good things.