Despair not

Jeremy Taylor (1613-1667) in The Rule and Exercises of Holy Living:

If your case be brought to the last extremity, at the pit's brink, even the very margin of the grave, yet then despair not. Remember that whatsoever final accident takes away all hope from you, bear it sweetly, it will also take away all despair too. For when you enter into the regions of death you rest from all your labours and your fears.

Let them who are tempted to despair consider how much Christ suffered to redeem us from sin, and he must needs believe that the desires which God had to save us were not less than infinite.

Let no man despair of God's mercies to forgive him, unless he be sure that his sins are greater than God's mercies.

Consider that God, who knows all the events of men, calls them to be His own, gives them blessings, arguments of mercy and instances of fear to call them off from death, and to call them home to life; and in all this shows no despair of happiness to them; and therefore much less should any man despair for himself.

Remember that despair belongs only to passionate fools or villains such as were Achitopel and Judas, or to devils and damned persons; and as the hope of salvation is a good disposition towards it, so is despair a certain consignation to eternal ruin. A man may be damned for despairing to be saved. Despair is the proper passion of damnation. 'God hath placed truth and felicity in heaven, curiosity and repentance upon earth, but misery and despair are the portions of hell'. (Venerable Bede).

And a prayer "to be said in any affliction, in a sad and disconsolate spirit, and in temptations to despair":

O eternal God, Father of mercies, and God of all comfort, with much mercy look upon the sadness and sorrows of Thy servant. The waters are gone over me, and my miseries are without comfort. Lord, pity me! Let Thy grace refresh my spirit! Let Thy comforts support me, Thy mercy pardon me, and never let my portion be amongst hopeless spirits. I can need no relief so great as Thy mercy is; for Thou art infinitely more merciful that I can be miserable; and Thy mercy far above my misery. Dearest Jesus, let me trust in Thee forever and let me never be confounded. Amen

Jeremy Taylor, The Rule and Exercises of Holy Living, Harper & Row, 1970.