Joel 2:12-17

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

13and rend your heart, and not your garments, and turn unto the LORD your God, for he is gracious and full of compassion, slow to anger, and plenteous in mercy, and repenteth him of the evil.

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

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

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

17Let the priests, the ministers of the LORD, weep between the porch and the altar, and let them say, Spare thy people, O LORD, and give not thine heritage to reproach, that the nations should rule over them: wherefore should they say among the peoples, Where is their God?