For thus saith the LORD; David shall never want a man to sit upon the throne of the house of Israel;
The promise guarantees that David's line will never lack a man to sit upon the throne of the house of Israel. That unbroken succession secures a continuing ruler from his house rather than an interrupted or ended kingship. The enduring throne points forward to the coming Redeemer as a king descended from David's house. He is the righteous Branch who reigns as king, and His reign brings salvation and safety.
The promise guarantees that David's line will never lack a man to sit upon the throne of the house of Israel. That unbroken succession secures a continuing ruler from his house rather than an interrupted or ended kingship. The enduring throne points forward to the coming Redeemer as a king descended from David's house. He is the righteous Branch who reigns as king, and His reign brings salvation and safety.