'Prophesy' in the Bible

But ye gave the Nazarites wine to drink; and commanded the prophets, saying, Prophesy not.

The lion hath roared, who will not fear? the Lord GOD hath spoken, who can but prophesy?

Also Amaziah said unto Amos, O thou seer, go, flee thee away into the land of Judah, and there eat bread, and prophesy there:

But prophesy not again any more at Bethel: for it is the king's chapel, and it is the king's court.

And the LORD took me as I followed the flock, and the LORD said unto me, Go, prophesy unto my people Israel.

Now therefore hear thou the word of the LORD: Thou sayest, Prophesy not against Israel, and drop not thy word against the house of Isaac.