Romans 14:1-6

But him that is weak in faith receive ye, yet not for decision of scruples. One man hath faith to eat all things: but he that is weak eateth herbs. Let not him that eateth set at nought him that eateth not; and let not him that eateth not judge him that eateth: for God hath received him. Who art thou that judgest the servant of another? to his own lord he standeth or falleth. Yea, he shall be made to stand; for the Lord hath power to make him stand. One man esteemeth one day above another: another esteemeth every day alike. Let each man be fully assured in his own mind. He that regardeth the day, regardeth it unto the Lord: and he that eateth, eateth unto the Lord, for he giveth God thanks; and he that eateth not, unto the Lord he eateth not, and giveth God thanks.