Hymn 457 from our hymn book, Psalms & Hymns of Reformed Worship.

JESUS, all-atoning Lamb,
Thine, and only Thine, I am:
Take my body, spirit, soul;
Only Thou possess the whole.

Thou my one thing needful be;
Let me ever cleave to Thee;
Let me choose the better part;
Let me give Thee all my heart.

Fairer than the sons of men,
Do not let me turn again,
Leave the fountain-head of bliss,
Stoop to creature happiness.

Whom have I on earth below?
Thee, and only Thee, I know;
Whom have I in Heaven but Thee?
Thou art All-in-all to me.

All my treasure is above,
All my riches is Thy love:
Who the worth of love can tell?
Infinite, unsearchable!

Author: Charles Wesley (1707-88)
Tune: Seymour
Composer: Carl Maria von Weber (1786-1826), adapted