The phrase "covenant of salt" in this verse is rich in symbolism. In biblical times, salt was not only a preservative but also a symbol of permanence and loyalty. When God makes a covenant of salt with David, it signifies an everlasting promise that cannot be broken. This covenant assures that David's lineage will have a lasting kingship over Israel. This promise is a testament to God's unwavering faithfulness and His commitment to His people.
The mention of David's descendants highlights the continuity of God's plan through generations. It serves as a reminder that God's promises are not limited by time; they extend beyond the immediate and into the future. This assurance of a divine promise can bring comfort and hope, reminding believers that God is faithful to His word and His plans are enduring. This verse encourages trust in God's eternal promises and His sovereign plan for His people, offering a sense of security and hope in His unchanging nature.