Victory over Enemies, Fame, and “A House” for both Israel as a whole and David in particular are promised here and these are fulfilled for us through Christ in the church today as well.
Let’s say your father began a business and had ertain contract with a client that was permanent, your father dies and you take over as CEO and now you get the minimum previously negotiated but even more as the business and your relationship with this vendor expand! You get all the blessings of the Davidic covenant and then some in Christ!
We are given victory over enemies (remember he "lready/not ye" for the church!), the name of Christ is known throughout the whole world, and the house of Christ in the church and the kingdom of God is being built up more and more!
There are differences between OT and NT, we have the spirit and we have the fullness of revelation in the completed Bible until Christ returns, you should rejoice and not be taking the church for granted!
In Prayer Today:
Thank Christ for his eternal kingship over the church and the world!