Many years ago in my misspent youth, my grandmother brewed tea in a white enameled pitcher. There’s no telling how old that pitcher was, and the tea she made would fill several railroad cars. Over the years, the inside of that pitcher turned brown. The outside was pretty, but no cleaner could clean the inside without dissolving the pitcher.
Just as that pitcher could not be cleaned without an industrial cleaner, sin can’t be cleansed by any other thing than the blood of Christ. Romans 5:6-11 reads:
For while we were still weak, at the right time Christ died for the ungodly. For one will scarcely die for a righteous person—though perhaps for a good person one would dare even to die—but God shows his love for us in that while we were still sinners, Christ died for us. Since, therefore, we have now been justified by his blood, much more shall we be saved by him from the wrath of God. For if while we were enemies we were reconciled to God by the death of his Son, much more, now that we are reconciled, shall we be saved by his life. More than that, we also rejoice in God through our Lord Jesus Christ, through whom we have now received reconciliation.
We were helpless and hopeless before Jesus came to this cesspool of a planet full of all sorts of evil. He did not have to come. He could have sat on His heavenly throne and let everyone suffer the final consequence of sin, a fiery pit of darkness and pain, Hell. But He came willingly, without reservation. He died for His unlovable enemies so that men could be justified and saved from God’s wrath.
Romans 3 is full of details about God’s salvation. Salvation is by an obedient faith in connection with the blood of Christ. Again, God could have sentenced all mankind to Hell, but chose not to. God provided the remedy for sin, thus in verse 26, God could be a just God and still justify all who would answer His call.
Romans 3:25, Hebrews 2:18, 1 John 2:2, and I John 4:10 state that Jesus is the “propitiation” for sin, meaning that Jesus is the peace offering to God for our sin. This concept is backwards from the common usage of the word. In common language, a man would offer propitiation to his god for a transgression he committed. But in the usage of Paul and John, God provided the peace offering for mankind’s sin. This offering is not without strings. I John 2:3 says that if we want to know God, we must keep His commandments. This is not to nullify grace and mercy, but God is to be obeyed.