Acts 2:18-21

The Holy Spirit will come upon all my servants, men and women alike, and they will prophesy. I will reveal startling signs and wonders in the sky above and mighty miracles on the earth below. Blood and fire and pillars of clouds will appear. For the sun will be turned dark and the moon blood-red before that great and awesome appearance of the day of the Lord. But everyone who calls on the name of the Lord will be saved.’ ”