'Seer' in the Bible

All these chosen to be doorkeepers at the thresholds were two hundred and twelve. These were registered by genealogy according to their villages: David and Samuel the seer had instituted them in their trust.

And Jehovah spoke to Gad, David's seer, saying,

all these were sons of Heman the king's seer in the words of God, to exalt his power; and God had given to Heman fourteen sons and three daughters.

and all that Samuel the seer, and Saul the son of Kish, and Abner the son of Ner, and Joab the son of Zeruiah had dedicated: all that was dedicated was under the hand of Shelomith and of his brethren.

And the acts of David the king, first and last, behold, they are written in the book of Samuel the seer, and in the book of Nathan the prophet, and in the book of Gad the seer;