'Prophesy' in the Bible

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

The lion hath roared; who will not fear? The Lord Jehovah hath spoken; who can but prophesy?

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

but prophesy not again any more at Beth-el; for it is the king's sanctuary, and it is a royal house.

and Jehovah took me from following the flock, and Jehovah said unto me, Go, prophesy unto my people Israel.

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