"And rend your heart, and not your garments, and turn unto the LORD your God: for he is gracious and merciful, slow to anger and of great kindness, and repenteth him of the evil. Who knoweth if he will return and repent, and leave a blessing behind him; even a meat offering and a drink offering unto the LORD your God." - Joel 2:13,14
Here are some sermons on Joel 2:13 & 14:
The Final World War, by Dr. David P. Murray
The Holy Spirit in the Minor Prophets, by Francis Nigel Lee
