'Mourning' in the Bible

Thou hast turned for me my mourning into dancing; thou hast loosed my sackcloth, and girded me with gladness;

I am depressed; I am bowed down beyond measure; I go mourning all the day.

I will say unto God my rock, Why hast thou forgotten me? why go I mourning because of the oppression of the enemy?

For thou art the God of my strength: why hast thou cast me off? why go I about mourning because of the oppression of the enemy?