So Old Testament scriptures show that Jesus Christ and Christians are brothers, and He is not ashamed to call us brothers. God is not ashamed to be called the God of the faithful saints.
Since they have such a high goal, that is, the saints—us—He is willing to speak of Himself as their God and friend. They acted as His friends should, and He is not ashamed of the relationship He has with them. God is never ashamed of anything He does or completes, and He is working on completing us today—the faithful act—in such a way that makes it appropriate for Him to treat us as our benefactor, protector, and friend.