This sermon explores the Seventh Commandment, "You shall not commit adultery," by examining its statement, extent, and theological basis. The speaker argues that the commandment upholds the sanctity of marriage as a creation ordinance and a binding covenant agreement between one man and one woman. It extends beyond physical acts to include lustful attitudes, reflecting God's concern for the purity of the heart. Furthermore, the sermon posits that human marriage serves as a profound picture of the ultimate eschatological union between Christ and His Church. The central message emphasizes that preserving marital fidelity is essential because it honors God's original design and reflects the glorious future redemption of believers.