1 Corinthian 10:25

Whatsoever is sold in the shambles, that eat, asking no question for conscience sake (KJV)

Then: Corinthians knew that the shambles meant the marketplace (Baker, p. 150). Baker also explains Paul's practical advice here meant, "Go ahead, eat what's sold there, and don't bother to ask questions about it." If you are eating away from the temple, no idolatrous implcations interfere.

Now: Americans bump into times and places where they can buy tv's, go to movies, eat in bars, etc. and it has nothing to do with their service to the Lord. At all times though, Christians stay conscientious as to the image of Christ which they signal. Will drinking lead a broather astray? Will buying and selling on Sunday diminish the Lord's glory? Will purchase of audio visual literature bring shame to the Lord? The questions can go on and on and everyone makes mistakes. Jesus knows the heart, though, so asking his minute by minute presence is the way to go.

Extra source: Cornerstone Biblical Commentary 1 Corinthians (William Baker), 2 Corinthians (Ralph Martin & Carl Toney), ed. by Philip Comfort. Carol Stream: Tyndale House Publishers, c2006.