My Steadfast Heart, O God

My steadfast heart, O God,
Will sound Thy praise abroad
With tuneful string;
The dawn shall hear my song,
Thy praise I will prolong,
And where Thy people throng
Thanksgiving bring.

Thy truth and tender love
Are high as Heav’n above;
Thy help we crave.
Be Thou exalted high
Above the lofty sky;
Lest Thy belovèd die,
O hear and save.

God’s Word shall surely stand;
His Name through every land
Shall be adored;
Lord, who shall lead our host?
Thine aid we covet most,
In Thee is all our boast,
Strong in the Lord.

Author: Unknown

This appears to be a metrical paraphrase of Psalm 108. The style and language are consistent with 18th- or 19th-century English metrical psalmody, but no specific author (such as Watts, Wesley, or Tate & Brady) matches these exact verses. It may be the work of a lesser-known hymnist or an anonymous compiler.