'Despair' in the Bible

Among those nations you shall find no rest, and there will be no resting place for the sole of your foot; but there the Lord will give you a trembling heart, failing of eyes, and despair of soul.

Then David said to himself, “Now I will perish one day by the hand of Saul. There is nothing better for me than to escape into the land of the Philistines. Saul then will despair of searching for me anymore in all the territory of Israel, and I will escape from his hand.”

“Do you intend to reprove my words,When the words of one in despair belong to the wind?

“If the scourge kills suddenly,He mocks the despair of the innocent.

Why are you in despair, O my soul?And why have you become disturbed within me?Hope in God, for I shall again praise HimFor the help of His presence.

O my God, my soul is in despair within me;Therefore I remember You from the land of the JordanAnd the peaks of Hermon, from Mount Mizar.

Why are you in despair, O my soul?And why have you become disturbed within me?Hope in God, for I shall yet praise Him,The help of my countenance and my God.

Why are you in despair, O my soul?And why are you disturbed within me?Hope in God, for I shall again praise Him,The help of my countenance and my God.