'Prophets' in the Bible

After that thou shalt come to the hill of God, where are the outposts of the Philistines; and it shall come to pass, when thou comest thither, into the city, that thou shalt meet a company of prophets coming down from the high place with lute and tambour and pipe and harp before them; and they themselves prophesying.

And when they came thither to the hill, behold, a company of prophets met him; and the Spirit of God came upon him, and he prophesied among them.

And it came to pass, when all that knew him before saw that, behold, he prophesied among the prophets, then the people said one to another, What is this that has happened to the son of Kish? Is Saul also among the prophets?

And a man of that place answered and said, But who is their father? Therefore it became a proverb, Is Saul also among the prophets?

Then Saul sent messengers to take David; and they saw a company of prophets prophesying, and Samuel standing as president over them; and the Spirit of God came upon the messengers of Saul, and they also prophesied.

And he himself also stripped off his clothes, and prophesied, himself also, before Samuel, and lay down naked all that day and all that night. Wherefore they say, Is Saul also among the prophets?

And Saul inquired of Jehovah; but Jehovah did not answer him, either by dreams, or by Urim, or by prophets.

And Samuel said to Saul, Why hast thou disquieted me, to bring me up? And Saul said, I am sore distressed; for the Philistines make war against me, and God is departed from me, and answers me no more, neither by prophets nor by dreams; therefore I have called thee, that thou mayest make known to me what I shall do.