Yahweh, the God of Abraham, of Isaac, and of Israel, our fathers, keep this forever in the imagination of the thoughts of the heart of your people, and prepare their heart to you;
These three men were prophets. They each wrote books, and of course, we have the books of Samuel, First and Second Samuel, the seer. But we do not have, and of course, even Samuel, Second Samuel wasn't written by him completely. We have the books. We do not have the book of Nathan and the book of Gad. They are lost books.