I Timothy 1:19-21 Timothy, my child, I entrust you with this command in keeping with the previous prophecies about you, so that by them you may fight the good fight, holding faith & a good conscience, which some, having cast away, have caused a shipwreck concerning the faith. Among them are Hymenaeus & Alexander, whom I have handed over to Satan to be taught not to blaspheme.
Conscience is an important issue.
I Cor 10:27-29 Eat anything sold in the meat market without raising questions of conscience, for, “The earth is the Lord’s & the fullness thereof. If an unbeliever invites you to a meal & you want to go, eat anything set before you without raising questions of conscience.
But if someone tells you, “This food was offered to idols,” then do not eat it, for the sake of the one who told you & for the sake of conscience--it might not be a matter of conscience for you, but it is for the other person. For why is it that my liberty is judged by another's conscience?
If I partake in the meal with thankfulness, why am I denounced because of that for which I give thanks? So whether you eat or drink or whatever you do, do it all to the glory of God.