What does the Bible say about the seed of David?

Psalm 89:25-36 emphasizes the everlasting throne of David, which is fulfilled in the person of Jesus Christ, the seed of David. God assures David that his lineage will endure forever, and this promise culminates in Christ, who reigns as King higher than all the kings of the earth. The covenant made with David is confirmed, asserting that despite the failures of David's descendants, God's mercy and faithfulness will not waver, establishing an eternal kingdom through Christ's redemptive work.