'Seer' in the Bible

All of those who are chosen for gatekeepers at the thresholds are two hundred and twelve; they are in their villages, by their genealogy; they whom David and Samuel the seer appointed in their office.

And Jehovah speaketh unto Gad, seer of David, saying:

all these are sons of Heman -- seer of the king in the things of God -- to lift up a horn; and God giveth to Heman fourteen sons and three daughters.

and all that Samuel the seer, and Saul son of Kish, and Abner son of Ner, and Joab son of Zeruiah sanctified, every one sanctifying any thing -- it is by the side of Shelomith and his brethren.

And the matters of David the king, the first and the last, lo, they are written beside the matters of Samuel the seer, and beside the matters of Nathan the prophet, and beside the matters of Gad the seer,