Romans 14:22-23

Amplified Bible, Classic Edition

²² 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, ^[a]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].

²³ But the man who has doubts (misgivings, an uneasy conscience) about eating, and then eats [perhaps because of you], stands condemned [before God], because he is not true to his convictions and he does not act from faith. For whatever does not originate and proceed from faith is sin [whatever is done without a conviction of its approval by God is sinful].