'Prophets' in the Bible

Then the Lord came down in the cloud and had talk with him, and put on the seventy men some of the spirit which was on him: now when the spirit came to rest on them, they were like prophets, but only at that time.

And a young man went running to Moses and said, Eldad and Medad are acting as prophets in the tent-circle.

And Moses said unto him, Enviest thou for my sake? would God that all the LORD'S people were prophets, and that the LORD would put his spirit upon them!