Joel 2:28-31

28After this I will pour out my Spirit on all humanity; then your sons and your daughters will prophesy, your old men will have dreams, and your young men will see visions.

29I will even pour out my Spirit on the male and female slaves in those days.

30I will display wonders in the heavens and on the earth: blood, fire, and columns of smoke.

31The sun will be turned to darkness and the moon to blood before the great and terrible day of the Lord comes.