Romans 14:6-8

Whoever observes the day, observes it for the honor of the Lord. Whoever eats, eats for the Lord, since he gives thanks to God; and whoever does not eat, it is for the Lord that he does not eat it, and he gives thanks to God. For none of us lives for himself, and no one dies for himself. If we live, we live for the Lord; and if we die, we die for the Lord. Therefore, whether we live or die, we belong to the Lord.