Romans 14:1, 4, 12, 22

As for the one whose faith is weak, accept him [into your fellowship], but not for [the purpose of] quarreling over his opinions.

Who are you to judge the servant of another? Before his own master he stands [approved] or falls [out of favor]. And he [who serves the Master—the Lord] will stand, for the Lord is able to make him stand.

So then, each of us will give an account of himself to God.

The faith which you have [that gives you freedom of choice], have as your own conviction before God [just keep it between yourself and God, seeking His will]. Happy is he who has no reason to condemn himself for what he approves.