The God who reveals Himself in His incarnate Son promises life and blessing to all who obey His commandments “by loving the LORD your God, by walking in his ways, and by keeping his commandments and his statutes and his rules” (Deut. 30:16). However, we are “people of the flesh” and “infants in Christ” (1 Cor. 3:1), among whom “there is jealousy and strife” (1 Cor. 3:3). Jesus must instruct us against the human ways of anger, adultery, divorce and false witness (Matt. 5:21–37), because all who live in these ways “shall surely perish” (Deut. 30:18). On the cross, He died to forgive our sins and free us from the ways of curse and death. Since Jesus Christ is our “life and length of days” (Deut. 30:20), we can be reconciled to our brother, live in chastity and marital faithfulness, and speak with honesty. He who serves from His cross also offers His gift of reconciliation at His altar, and we can be at peace with our brothers and sisters in Christ who are “God’s field, God’s building” (1 Cor. 3:9).