If one partakes of food after saying a blessing over it, why should one be denounced for eating what one has given thanks to God for?
the man who values a particular day does so to the Lord. The eater eats to the Lord, since he thanks God for his food; the non-eater abstains to the Lord, and he too thanks God.
Your rights must not get a bad name.
Am I not free? Am I not an apostle? Have I not seen Jesus our Lord? Are you not the work I have accomplished in the Lord?