Cheek grow pale, but heart be vigorous

Cheek grow pale, but heart be vigorous!
Body fall, but soul have peace!
Welcome, pain! thou searcher rigorous!
Slay me, but my faith increase.

Sin, o’er sense so softly stealing;
Doubt, that would my strength impair;
Hence at once from life and feeling!—
Now my cross I gladly bear.

Up, my soul! with clear sedateness
Read heaven’s law, writ bright and broad,
Up! a sacrifice to greatness,
Truth, and goodness,—up to God!

Up to labor! from thee shaking
Off the bonds of sloth, be brave!
Give thyself to prayer and waking;
Toil some fainting heart to save!

Source: A Book of Hymns for Public and Private Devotion (15th ed.) #320