1 Samuel 3:20; 1 Samuel 9:9; 1 Samuel 10:5; 1 Samuel 10:10-11; 1 Samuel 19:20; 1 Samuel 22:5

20 And all Israel from Dan even to Beersheba knew that Samuel was established to be a prophet of the LORD.
9 (Beforetime in Israel, when a man went to enquire of God, thus he spake , Come , and let us go to the seer : for he that is now called a Prophet was beforetime called a Seer .)
5 After that thou shalt come to the hill of God, where is the garrison of the Philistines: and it shall come to pass, when thou art come thither to the city, that thou shalt meet a company of prophets coming down from the high place with a psaltery, and a tabret, and a pipe, and a harp, before them; and they shall prophesy :
10 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. 11 And it came to pass, when all that knew him beforetime saw that, behold, he prophesied among the prophets, then the people said one to another, What is this that is come unto the son of Kish? Is Saul also among the prophets?
20 And Saul sent messengers to take David: and when they saw the company of the prophets prophesying , and Samuel standing as appointed over them, the Spirit of God was upon the messengers of Saul, and they also prophesied .
5 And the prophet Gad said unto David, Abide not in the hold; depart , and get thee into the land of Judah. Then David departed , and came into the forest of Hareth.