'Mourning' in the Bible

Therefore I will wail and howl, I will go stripped and naked: I will make a wailing like the dragons, and mourning as the owls.

Pass ye away, thou inhabitant of Saphir, having thy shame naked: the inhabitant of Zaanan came not forth in the mourning of Bethezel; he shall receive of you his standing.

Make yourself bald [in mourning]—shave off your hairFor the children of your delight;Remain as bald as the eagle,For your children will be taken from you into exile.