'Mourning' in the Bible

On that day the Lord GOD of the Heavenly Armies called for weeping and mourning, for shaving heads and wearing sackcloth.

Then I'll besiege Aruel, and there will be sorrow and mourning; she will become to me like an altar fireplace.

For people will be beating their breasts in mourning over the pleasant fields, over the fruitful vines,

and the LORD's ransomed ones will return and enter Zion with singing. Everlasting joy will rest upon their heads, gladness and joy will overtake them, and sorrow and mourning will flee away."

Your sun won't set, nor will your moon withdraw itself for the LORD will be your everlasting light, and your days of mourning will end.

to provide for those who grieve in Zion to bestow on them a crown of beauty instead of ashes, the oil of gladness instead of mourning, a mantle of praise instead of a spirit of despair." "Then people will call them "Oaks of Righteousness", "The Planting of the LORD", in order to display his splendor.