Romans 14:1, 4, 12, 22

Him that is weak in the faith receive ye, but not to doubtful disputations.

Who art thou that judgest another man's servant? to his own master he standeth or falleth. Yea, he shall be holden up: for God is able to make him stand.

So then every one of us shall give account of himself to God.

Hast thou faith? have it to thyself before God. Happy is he that condemneth not himself in that thing which he alloweth.