A.T. Robertson Commentary 1 Corinthians 10:27

"If one of them that believe not biddeth you [to a feast], and ye are disposed to go; whatsoever is set before you, eat, asking no question for conscience` sake." — 1 Corinthians 10:27 (ASV)

Biddeth you (καλε υμας). To a general banquet, but not to a temple feast (8:10) which is prohibited. If a pagan invites Christians to their homes to a banquet, one is to act like a gentleman.