Joel 2:27-32

And ye shall know that I am in the midst of Israel, and that I am Jehovah your God, and there is none else; and my people shall never be put to shame. And it shall come to pass afterward, that I will pour out my Spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions: and also upon the servants and upon the handmaids in those days will I pour out my Spirit. And I will show wonders in the heavens and in the earth: blood, and fire, and pillars of smoke. The sun shall be turned into darkness, and the moon into blood, before the great and terrible day of Jehovah cometh. And it shall come to pass, that whosoever shall call on the name of Jehovah shall be delivered; for in mount Zion and in Jerusalem there shall be those that escape, as Jehovah hath said, and among the remnant those whom Jehovah doth call.