Daniel 10:2

And it came to pass, when I heard these words, that I sat down and wept, and mourned certain days, and fasted, and prayed before the God of heaven,

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

That I have great heaviness and continual sorrow in my heart.

Oh that my head were waters, and mine eyes a fountain of tears, that I might weep day and night for the slain of the daughter of my people!

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

Rejoice ye with Jerusalem, and be glad with her, all ye that love her: rejoice for joy with her, all ye that mourn for her:

And Jesus said unto them, Can the children of the bridechamber mourn, as long as the bridegroom is with them? but the days will come, when the bridegroom shall be taken from them, and then shall they fast.

And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed.

Be afflicted, and mourn, and weep: let your laughter be turned to mourning, and your joy to heaviness.