'Prophet' in the Bible

And all Israel, from Dan even to Beer-sheba, knew that Samuel was established a prophet of Jehovah.

(In former time in Israel, when a man went to ask counsel of God, he said, Come and let us go to the seer; for he that is now called a Prophet was in former time called a Seer.)

And the prophet Gad said to David, Abide not in the stronghold; depart, and go into the land of Judah. Then David departed, and came into the forest of Hareth.