'Abstain' in the Bible

I now deal with the subjects mentioned in your letter. It is well for a man to abstain altogether from marriage.

It is true that a particular kind of food will not bring us into God's presence; we are neither inferior to others if we abstain from it, nor superior to them if we eat it.

But if any one tells you, "This food has been offered in sacrifice;" abstain from eating it--out of respect for him who warned you, and, as before, for conscience' sake.