God saves fallen human beings by resolving the problem of sins and by dealing with our sin. The hymn "Rock of Ages, Cleft for Me" (Hymns, #1058) is a good Christian song. It is a valuable, classic Christian hymn. The key point of this hymn is found in the last lines of the first stanza: "Let the water and the blood, / From Thy riven side which flowed, / Be of sin the double cure, / Save me from its guilt and power." Guilt is due to our outward sinful deeds and shows that we have received eternal punishment; power refers to the power of the sinful nature within us. How can we resolve the problem of sin and sins? It is through the water and the blood which flowed from the Lord's riven side. The blood redeems us from the eternal punishment related to our sins, and the water saves us from the power of sin. This is the double cure mentioned in this hymn. Therefore, this hymn is well written, and the truth in it is very clear.
This shows that we must have a thorough knowledge of the truth. "Let the water and the blood, / From Thy riven side which flowed, / Be of sin the double cure, / Save me from its guilt and power." The Lord's blood washes away our outward transgressions and saves us from the guilt of eternal punishment. The water denotes the Lord's resurrection life, which enters into us and is the power to deliver us from the power of sin. In Romans 7:24 Paul said, "Wretched man that I am! Who will deliver me from this body of this death?" He is speaking of our inward, sinful nature. In 8:1 Paul says, "There is now then no condemnation to those who are in Christ Jesus." The condemnation here does not refer to being condemned to go to the lake of fire but to the condemning within us. Many husbands do not want to lose their temper with their wife. They set their will and pray, but they still lose their temper. After getting angry, they condemn themselves for being wretched, and they wonder who can save them. However, there is now no condemnation to those who are in Christ Jesus, because the law of the Spirit of life has freed us from the law of sin and of death (v. 2). This is what is referred to in the line of the hymn "Save me from its...power." The blood redeems us outwardly, and the life saves us inwardly. Redemption delivers us from our sinful deeds, and salvation delivers us from our sinful nature.