Joel 2:31

2:31 The sunlight will be turned to darkness

and the moon to the color of blood,

before the day of the Lord comes –

that great and terrible day!

Joel 2:2

2:2 It will be a day of dreadful darkness,

a day of foreboding storm clouds,

like blackness spread over the mountains.

It is a huge and powerful army –

there has never been anything like it ever before,

and there will not be anything like it for many generations to come!