The sermon establishes God's righteousness and justice as essential attributes flowing from His holiness, countering accusations that He is responsible for evil. It argues that sin entered the world through Satan's deception and human disobedience, making all people guilty before a holy God. The message highlights Romans 3 to demonstrate that while no one can be justified by the law, God provided a way of salvation through Jesus Christ. By accepting Christ as propitiation, believers are justified freely by grace, allowing God to remain just while justifying those who have faith. The conclusion urges listeners to live in light of this truth by walking in the Spirit and setting their affections on heavenly things.