Acts 2:19-21 (KJV)
19. And I will shew wonders in heaven above,And signs in the earth beneath;Blood, and fire, and vapour of smoke:20. The sun shall be turned into darkness,And the moon into blood,Before that great and notableDay of the Lord come:21. And it shall come to pass, that whosoever
shall call on the name of the Lord shall be saved.