'Seers' in the Bible

Now the remainder of the words of Manasseh and his prayer to his God and the words of the seers who spoke to him in the name of Yahweh, the God of Israel, behold, they [are] in the words of the kings of Israel.

And his prayer, and [how] he responded to him, all his sin and his unfaithful acts, and the places where he built the high places and set up Asherahs and idols before he humbled himself, behold, they are written in the words of the seers.