Pastor Blake Snapp concluded the sermon series on Malachi by discussing the themes of justice, judgment, and deliverance. He emphasized how the Israelites questioned God's justice in their difficult circumstances, forgetting their own shortcomings and disobedience. Pastor highlighted that while God is a just judge, He is also rich in mercy and offers healing and joy through the coming of Jesus, who will purify and redeem His people. Ultimately, he called for everyone to respond to God's love with obedience, reminding them that although the Old Testament ends with a curse, the New Testament offers a cure in Jesus Christ.