'Seer' in the Bible

(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.)

As they went up the ascent to the city, they met maidens going forth to draw water; and they said to them, Is the seer here?

And Samuel answered Saul and said, I am the seer: go up before me to the high place, and ye shall eat with me to-day; and to-morrow I will let thee go, and will tell thee all that is in thy heart.