I have made a covenant with my chosen - I have made a covenant with Abraham, Isaac, and Jacob; and renewed it with Moses and Joshua in reference to the Israelites in general: but I have made one with David in especial relation to himself and posterity, of whom, according to the flesh, the Christ is to come. And this is the covenant with David: -
I have made a covenant with my chosen - With my chosen one; that is, with David. The original is in the singular number, though by the Septuagint, and the Vulgate, and by Luther, it is rendered in the plural - chosen ones - elect. This is undoubtedly the language of God himself, though it is not expressly ascribed to him. The design is to describe the solemn promise which God had made to David and to his posterity. Compare Psalm 78:70-71. See also, on the use of the phrase “made a covenant,” see Psalm 50:5, note; Psalm 83:5, note.
I have sworn unto David my servant - I have taken a solemn oath in regard to him. The substance of the oath is stated in the next verse. The promise referred to is found in 2 Samuel 7:11-16.
“I have sworn unto David My servant ... with whom My hand shall be established: Mine arm also shall strengthen him.... My faithfulness and My mercy shall be with him: and in My name shall his horn be exalted. I will set his hand also in the sea, and his right hand in the rivers. He shall cry unto Me, Thou art my Father, my God, and the Rock of my salvation. Also I will make him My first-born, higher than the kings of the earth. My mercy will I keep for him forevermore, and My covenant shall stand fast with him.” Psalm 89:3-28. PP 755.1
“His seed also will I make to endure forever,
And his throne as the days of heaven.” Psalm 89:29. PP 755.2
“He shall judge the poor of the people,
He shall save the children of the needy,
And shall break in pieces the oppressor.
They shall fear thee while the sun endureth,
And so long as the moon, throughout all generations....
In his days shall the righteous flourish;
And abundance of peace, till the moon be no more.
He shall have dominion also from sea to sea,
And from the river unto the ends of the earth.”
“His name shall endure forever:
His name shall be continued as long as the sun:
And men shall be blessed in him:
All nations shall call him blessed.” PP 755.3