Joel 2:10-13

The earth quakes before them, The heavens tremble, The sun and the moon grow dark And the stars lose their brightness. [Rev 9:2-4; 16:14] The LORD utters His voice before His army, For His camp is very great, Because strong and powerful is he who [obediently] carries out His word. For the day of the LORD is indeed great and very terrible [causing dread]; Who can endure it? [Is 26:20, 21; 34:1-4, 8; Rev 6:16, 17] “Even now,” says the LORD, “Turn and come to Me with all your heart [in genuine repentance], With fasting and weeping and mourning [until every barrier is removed and the broken fellowship is restored]; Rip your heart to pieces [in sorrow and contrition] and not your garments.” Now return [in repentance] to the LORD your God, For He is gracious and compassionate, Slow to anger, abounding in lovingkindness [faithful to His covenant with His people]; And He relents [His sentence of] evil [when His people genuinely repent].