Romans 14:5
One man rates one day above another, another rates them all alike. Let every man be fully convinced in his own mind.
Romans 14:23
But the man who has misgivings about eating, if he then eats, has already condemned himself by so doing, because he did not follow his faith, and any action that does not follow one's faith is a sin.
Romans 14:14
I know, and through my union with the Lord Jesus I have a clear conviction, that nothing is unclean in itself; that a thing is unclean only to the person who thinks it unclean.
1 Corinthians 8:7
But it is not in all of you that such knowledge is found. Some, because of their past habits with idols, even down to the present moment, still eat such food as was really sacrificed to an idol, and so their consciences, because they are overscrupulous, are contaminated.
1 Corinthians 8:11
Yes, the overscrupulous brother, for whom Christ died, is ruined by your so-called knowledge.
Galatians 4:9-10
but now, since you have come to know God, or rather have come to be known by Him, how can you turn back to your own crude notions, so weak and worthless, and wish to become slaves to them again?
Colossians 2:16-17
Stop letting anyone pass judgment on you in matters of eating and drinking, or in the matter of annual or monthly feasts or sabbaths.
1 John 3:19-21
In this way we shall know by experience that we are on the side of the truth, and satisfy our consciences in God's sight,