Joel 2:30-31

30 I will show portents in the heavens and on the earth, blood and fire and columns of smoke.
31 The sun shall be turned to darkness, and the moon to blood, before the great and terrible day of the Lord comes.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.