COMMENTS
All who hungered and thirsted after righteousness, whose souls thirsted after God as the hart for the water-brook, and who, having found Him, consecrated themselves to Him and received the anointing of the holy Spirit, witnessing with their spirits as sons of God, and who as anointed sons could discover in themselves the worthy traits of true sons—loyalty, faithfulness, zeal, energy, courage, discretion, etc.—these constitute the class with whom the Lord has made an everlasting covenant and to whom belong "the sure mercies of David".
Covenants are of two kinds, a promise binding unconditionally one party to another, or a contract binding two parties conditionally to one another. The covenant here referred to (the sure mercies of David) is of the former class. David, the Beloved, is the Christ class; the sure mercies of David are the promises belonging to this class. They are sure because secured by God's Oath, and are everlasting because their benefits will be enjoyed eternally. They are a wonderful heritage. How goodly a portion such have from the Lord!
Gen. 22:16-18; 2 Sam. 23:5; Psa. 89:34-37; Acts 13:34; Rom. 9:7-13; Gal. 3:8, 9, 14-19, 26-29; 4:21-31; Heb. 6:13-20; 11:17-19; 2 Cor. 1:20.