You will keep in perfect peace him whose mind is steadfast, because he trusts in You.@Isaiah 26:3

Samuel Ecking, in the Gospel Magazine, late 18th Century.

Hamburg Lowell Mason, 1824; first appeared in The Boston Handel and Haydn Society Collection of Church Music, third edition, 1825 (🔊 pdf nwc). This hymn was sung by a 250-member choir on May 4, 1865, at the State House in Springfield, Illinois, as the body of assassinated president Abraham Lincoln lay in state, just before the casket was closed and taken to the cemetery.

Lowell Mason (1792–1872)

Peace, troubled soul, thou need’st not fear;
Thy great provider still is near;
Who fed thee last, will feed thee still:
Be calm, and sink into His will.

The Lord, who built the earth and sky,
In mercy stoops to hear thy cry;
His promise all may freely claim;
Ask and receive in Jesus’ name.

Without reserve give Christ your heart,
Let Him His righteousness impart;
Then all things else He’ll freely give;
With Him you all things shall receive.

Thus shall the soul be truly blest,
That seeks in God His only rest;
May I that happy person be,
In time and in eternity.