1 Corinthians 8:1–13: Food Offered to Idols
Paul grants that idols are nothing and food does not commend anyone to God, but he will not let knowledge be the only voice. Love builds up, and liberty that wounds a weak conscience is sin against Christ.
1 Corinthians 10:23–33: Freedom and the Cross
Scripture never mentions wearing a cross as jewelry, so the question is not settled by a direct command. Paul gives a pattern instead: freedom is real, but what builds others up and glorifies God outranks asserting my rights.