Galatians 6:3 in the King James Version
For if a man think himself to be something, when he is nothing, he deceiveth himself.
Context
2 Bear one another’s burdens, and so fulfill the law of Christ.
3 For if a man thinks himself to be something when he is nothing, he deceives himself.
4 But let each man examine his own work, and then he will have reason to boast in himself, and not in someone else.