Tyndale Open Study Notes1 Chronicles 12

Support for making David king started before Saul's death. When Saul was king and David was on the run, warriors joined David, forming a large group from various tribes across Israel. Even Saul's relatives left him to support David as king (1 Chronicles 12:2). David wisely assessed these deserters (1 Chronicles 12:17) to ensure they were not spies for Saul. Before David was officially anointed at Hebron, the people's wishes aligned with God's will for David to become king.

The succession of a king was often a contentious issue, especially when the new king came from a different family. The gathering of all twelve tribes at Hebron, including some of Saul’s relatives (1 Chronicles 12:29), to confirm David’s rule showed that the tribes had resolved their conflicts after Saul’s death (12:23–37). The Chronicler emphasizes the unity among the tribes by stating that they all had the single purpose of making David the king over all Israel (1 Chronicles 12:38).