The only basis for the forgiveness of sins, given in the Bible, is faith in what the blood of Christ accomplished. Paul wrote:

ROM 3:25-26 Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God; To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which believeth in Jesus.

We must recognize that God was right and just in commanding Jesus to go up on the cross. And it was a commandment. Jesus said:

JOH 10:18 No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father.

If the wages of sin are death, and Christ never sinned, how could God be right and just in commanding Jesus to die the death that he died? If there was no sin in Christ, wouldn't God have been wrong in commanding his death?

The only way that God can be right and just in making such a commandment was that there was sin in the body of Jesus that had to be destroyed. This physical nature, styled by God in the Bible "sin in the flesh" or "sin that dwelleth in me" is the root of all sin in mankind. It is the lust of the eyes, the lust of the flesh, and the pride of life (1 John 2:16) which dwells in all the descendants of Adam including Christ. This sinful flesh had to be destroyed, to remove willfulness and temptation from the body, that we might live life in immortality.

This is the reason that God was just and right in commanding Christ to go up on the cross. The declaration that Jesus made upon the cross was: "Here is how sinful flesh should be treated. It is fit only for destruction." When we recognize this, then, and only then, is God willing to forgive us our transgressions. Therefore, Christadelphians believe:

VI.--That God, in His kindness, conceived a plan of restoration which, without setting aside His just and necessary law of sin and death, should ultimately rescue the race from destruction, and people the earth with sinless immortals.