The sermon explores the theological attribute of God as a God of vengeance, drawing primarily from Psalm 94 to clarify that divine retribution is an act of perfect justice rather than human passion. It distinguishes between sinful human revenge and God's righteous judgment, emphasizing that His vengeance serves to uphold righteousness and protect His people from wickedness. The preacher explains that God's punishment of the ungodly is intrinsically linked to His mercy toward the elect, acting as a kinsman redeemer who avenges injustice while offering salvation. By addressing the apparent triumph of the wicked, the message encourages believers to trust in God's omniscience and ultimate judgment even amidst present suffering. The congregation is urged to sing these truths with boldness, recognizing that Christ embodies both justice and mercy for those who persevere in faith.