What did God promise David about the royal family in 2 Samuel 7?

God promised David that a royal house and royal family would begin with him, and that throughout the ages this royal line would be the ancestors of the King. This is why Jesus is presented as the King of Israel.

Les explains that in 2 Samuel chapter 7 God promised David that beginning with him would be a royal house and a royal family. Down through the ages, that royal family would be the ancestors of the King. In the New Testament account, Joseph is addressed as “thou son of David,” which is instituted to show that Jesus is in that royal family. The opening of the New Testament presents Jesus as the King; later it will be revealed that He is also the Redeemer.

2 Samuel 7

What earlier covenant does God's promise to David in 2 Samuel 7 go back to?

God's promise to David in 2 Samuel 7 traces back to the Abrahamic covenant. In that earlier covenant, God promised Abraham that out of him would come a nation of people. He would place them in the land and eventually bring forth the ruler or government over the Kingdom.