Joel 2:13

10 The earth quaketh before them; the heavens tremble; the sun and the moon are darkened, and the stars withdraw their shining.

11 And Jehovah uttereth his voice before his army; for his camp is very great; for he is strong that executeth his word; for the day of Jehovah is great and very terrible; and who can abide it?

12 Yet even now, saith Jehovah, turn ye unto me with all your heart, and with fasting, and with weeping, and with mourning:

13 and rend your heart, and not your garments, and turn unto Jehovah your God; for he is gracious and merciful, slow to anger, and abundant in lovingkindness, and repenteth him of the evil.

14 Who knoweth whether he will not turn and repent, and leave a blessing behind him, even a meal-offering and a drink-offering unto Jehovah your God?

15 Blow the trumpet in Zion, sanctify a fast, call a solemn assembly;

16 gather the people, sanctify the assembly, assemble the old men, gather the children, and those that suck the breasts; let the bridegroom go forth from his chamber, and the bride out of her closet.