Joel 2:12-13 "'Even now,' declares the Lord, 'return to me with all your heart, with fasting and weeping and mourning.' Rend your heart and not your garments. Return to the Lord your God, for he is gracious and compassionate, slow to anger and abounding in love, and he relents from sending calamity."
The Coming of the Spirit:
Joel 2:28-29 "'And afterward, I will pour out my Spirit on all people. Your sons and daughters will prophesy, your old men will dream dreams, your young men will see visions. Even on my servants, both men and woman, I will pour out my Spirit in those days.'"
The Day of the Lord:
Joel 2:31 "The sun will be turned to darkness and the moon to blood before the coming of the great and dreadful day of the Lord."