Joel 2:1-2

Blow a trumpet in Zion, And sound an alarm on My holy mountain! Let all the inhabitants of the land tremble, For the day of the LORD is coming; Surely it is near, A day of darkness and gloom, A day of clouds and thick darkness. As the dawn is spread over the mountains, So there is a great and mighty people; There has never been anything like it, Nor will there be again after it To the years of many generations.