David therefore departed there, and escaped to the cave of Adullam: and when his brothers and all his father's house heard it, they went down there to him.
In other words he is saying, "Hey, you Benjamites, I'm a Benjamite. Look what I've done for you. If you elect me president, I'll do this and this and this," sort of a political speech against David. "You know if David's elected, if David's elected king, he's not gonna treat you Benjamites well. He's from the house of Judah, you know Jesse, and so forth. He's not gonna be as nice to you as I've been to you. He's not gonna make you the captains over the thousands and the hundreds. He's not gonna give you fields and all. Here look what I've done for you, and you guys are turned against me. You're in favor of David instead of me. None of you will really tell me where he is. You've conspired against me."