Isaac Watts - Psalm 89

The covenant made with Christ; or, The true David.

For ever shall my song record
The truth and mercy of the Lord;
Mercy and truth for ever stand,
Like heav'n, established by his hand.

Thus to his Son he sware, and said,
"With thee my cov'nant first is made;
In thee shall dying sinners live,
Glory and grace are thine to give.

"Be thou my Prophet, thou my Priest;
Thy children shall be ever blest;
Thou art my chosen King: thy throne
Shall stand eternal like my own.

"There's none of all my sons above
So much my image or my love;
Celestial powers thy subjects are:
Then what can earth to thee compare?

"David, my servant, whom I chose
To guard my flock, to crush my foes,
And raised him to the Jewish throne,
Was but a shadow of my Son."

Now let the church rejoice and sing
Jesus, her Savior and her King;
Angels his heav'nly wonders show,
And saints declare his works below.

Isaac Watts

http://www.poemhunter.com/poem/psalm-89/