The Book of 2 Samuel Chapters 21 & 22 ESV Version.
2 Samuel 21 reveals David’s relationship with the Gibeonites and how he seeks to make amends after Saul tried to destroy them.
2 Samuel Chapter 22 is an exaltation from King David recounting how the Lord had rescued him from his enemies, including the mad King Saul, who tried to kill him more than once. In this song of praise, David calls God his deliverer, his fortress, and the rock in which he takes refuge. God is also his shield and salvation.