I will raise me up a faithful priest, that shall do according to that which is in my heart and in my mind: and I will build him a sure house; and he shall walk before my anointed forever.
The word "seer" is that which it implies it's a man that is able to see into the spiritual things, or a man who has spiritual perception, and they were called "seers", that was the original word for the prophets. Later on they called them prophets. But in the earlier days they were called seers.Then Saul said to his servant,