Romans 14:1, 4, 12, 22

AS FOR the man who is a weak believer, welcome him [into your fellowship], but not to criticize his opinions or pass judgment on his scruples or perplex him with discussions.

Who are you to pass judgment on and censure another's household servant? It is before his own master that he stands or falls. And he shall stand and be upheld, for the Master (the Lord) is mighty to support him and make him stand.

And so each of us shall give an account of himself [give an answer in reference to judgment] to God.

Your personal convictions [on such matters]–exercise [them] as in God's presence, keeping them to yourself [striving only to know the truth and obey His will]. Blessed (happy, to be envied) is he who has no reason to judge himself for what he approves [who does not convict himself by what he chooses to do].