Thoughts on the Peccability of Jesus

I have often heard how the offense of human sin against an infinite God, could only be canceled out by the sacrifice of an infinite being. One reason this troubles me, is that it does not account for the 33 1/2 years that Jesus lived before the crucifixion. If it his deity was the effective agent in our salvation, couldn't he have died at any point in his life, even at the hands of Herod the Great?

I am thinking that perhaps it is his humanity, albeit a human life only he could have lived, that made him our representative.

• The scriptures say he "emptied himself"
• That he took on "the likeness of sinful flesh"
• 2 Corinthians 5:21  He made Him who knew no sin to be sin on our behalf, so that we might become the righteousness of God in Him."

So that the righteous requirements of the Law might be fulfilled in us.  

I have heard people argue that Jesus temptation is completely external, that he could not have chosen to sin (peccability). But how can we call this temptation? How can he truly be our representative?

God does not sin, but I believe this sinlessness is an aspect of his unchanging character - not from an inability of his being.

Everything we know about ability seems to say that it is morally neutral. The ability to speak gives us the ability to  tell the truth or to lie. You cannot take away the ability to lie without taking away the power to communicate as well. Only character gives power an orientation to good or evil. So I would argue that God (and Christ) have the ability to do anything, but their actions are governed by their character.

If someone can only do the right thing can we truly say they are Good?
If someone can only do the right thing can we really say they are obedient?

http://newtheologicalmovement.blogspot.com/2012/02/if-christ-could-not-sin-how-was-he.html