God Relented

Jehovah will forgive even the most wicked of sinners if they repent (see Jonah (3:2-10; 4:2, 11) 

3000 found forgiveness for putting the Son of God to death:  “you nailed to a cross by the hands of godless men and put Him to death” (Acts 2:23)

If the Ninevites found forgiveness, and the folks who crucified Jesus, found forgiveness, then you and me can find it too.