'Mourning' in the Bible

Therefore, thus says Yahweh, the God of hosts, my Lord, "In all [of] the public squares [there will be] wailing, and in all [of] the streets [they will say], 'Alas, alas, alas!' They shall call [the] farmers to mourning and [to] wailing, to those who are skilled [in] lamentation.

And I will turn your feasts into mourning and all of your songs into lament, and I will put sackcloth on all loins and baldness on every head. And I will make it like the mourning for an only child, and its end like a bitter day.