The Ones Who Never Wrote A Book
Moses, Samuel and Elijah are among the biggest prophetic figures in the Old Testament, and none of them has a book in the prophets section. They show up inside the story.
God tells Abimelech that Abraham is a prophet who will pray for him.
Moses is the pattern for every prophet after him. Aaron is his prophet before Pharaoh in Exodus 7:1, and Miriam is called the prophetess in Exodus 15:20.
A prophetess judging Israel under a palm tree in Judges 4:4 and 5.
Samuel anointed kings. Nathan told David to his face that he was the man. Gad advised him.
Ahijah tore a new cloak into twelve pieces to announce the split of the kingdom (1 Kings 11). Jehu son of Hanani rebuked a king. Micaiah stood alone against the court.
Confronting Baal worship in the northern kingdom.
When the Book of the Law turned up in the temple, King Josiah's officials took it to her, and her word shaped the reform that followed.
“Yet the Lord warned Israel and Judah by every prophet and every seer, saying, ‘Turn from your evil ways and keep my commandments and my statutes, in accordance with all the Law that I commanded your fathers, and that I sent to you by my servants the prophets.’”
2 Kings 17:13 (ESV)Plenty have no names at all. An unnamed prophet speaks to Israel in Judges 6:8. A man of God from Judah confronts Jeroboam in 1 Kings 13, and an old prophet in Bethel lies to him. Obadiah, the steward of Ahab's house, hid a hundred prophets of the Lord in caves, fifty to a cave (1 Kings 18:4). Fifty men of the sons of the prophets watched Elijah cross the Jordan (2 Kings 2:7). Isaiah never names his wife, the prophetess of Isaiah 8:3.
And do you count the four hundred court prophets who told Ahab exactly what he wanted to hear (1 Kings 22:6)? Or Noadiah, the prophetess who tried to frighten Nehemiah (Nehemiah 6:14)? Scripture calls them prophets. They were not speaking for God. That question matters more than the total. See what the Bible says about false prophets.
Every head count leaves somebody out, and the Bible does not seem bothered by that. Which tells you the count was never the point.