Romans 14:5
5 qOne person esteems one day as better than another, while another esteems all days alike. rEach one should be fully convinced in his own mind.
Romans 14:14
14 I know and am persuaded in the Lord Jesus cthat nothing is unclean in itself, dbut it is unclean for anyone who thinks it unclean.
Romans 14:23
23 But whoever has doubts is condemned if he eats, because the eating is not from faith. For whatever does not proceed from faith is sin.1