How do we know God's covenant with David is true?

The truth of God's covenant with David is rooted in the unchanging nature of God Himself, as highlighted in Malachi 3:6, 'I am the Lord; I change not.' This covenant is characterized by its unconditional nature and the assurance that it is ordered in all things, meaning it is not contingent upon human actions. David's affirmation that 'yet God hath made with me an everlasting covenant' underscores a promise that is fulfilled through Christ, who embodies the true successor of David's throne. The covenant finds its ultimate expression in the certainty that those whom God has chosen will be redeemed through Christ's atoning work, as expressed in 2 Corinthians 1:20, where all God's promises are affirmed in Christ.