Romans 6:13

6:13 and do not present your members to sin as instruments to be used for unrighteousness, but present yourselves to God as those who are alive from the dead and your members to God as instruments to be used for righteousness.

Romans 14:6

14:6 The one who observes the day does it for the Lord. The one who eats, eats for the Lord because he gives thanks to God, and the one who abstains from eating abstains for the Lord, and he gives thanks to God.