1 Corinthians 10:29-30

WNT(i) 29 But now I mean his conscience, not your own. "Why, on what ground," you may object, "is the question of my liberty of action to be decided by a conscience not my own? 30 If, so far as I am concerned, I partake with a grateful heart, why am I to be found fault with in regard to a thing for which I give thanks?"