1 Corinthians 10:27-28

Goodspeed(i) 27 If one of the heathen invites you to his house, and you wish to go, eat whatever is served, without raising any question, as far as conscience is concerned. 28 But if someone says to you, "This meat has been offered in sacrifice," let it alone, on account of the man who told you and his conscientious scruples;