First off – Let me say that we have one God in three. To say that our Christ could sin is to say that the Father and HS could as well.
It is true that the first Adam was not created with a sin nature, however, he certainly had the ability to choose to Obey God and remain that way or to listen to Eve and die.
Next we look at fallen man. Because of Adam's failure, man has lost the ability to do good. His thoughts and actions are only evil continually.
I therefore believe that Christ is above both Adam and fallen man in that He is not capable of sin. He even proclaims in John 6:38, “I have come down from heaven, not to do My own will, but the will of Him who sent Me".
Secondly, Christ was not born of man. He was conceived by the Holy Spirit. This alone breaks the sin chain and renders Him incapable of sin.
There are some things that are not clearly stated in the Bible. We are created to work them out on our own by faith in a perfect God.
I want to thank you and Magnetta for your thoughtful and I'm sure heart-felt replies. And I will confess that up until a couple of days ago, I was staunchly in the Impeccability of Christ camp, as probably most Reformed folks are and likely a lot of Arminians as well. But right at this moment of time, I'm no longer dogmatic on this question due to a conversation I had with a pastor of a Presbyterian church that I'm checking out and have been attending for the last several weeks. So...let me just briefly start at the beginning.
My wife and I moved a little over two months ago out of the area we were in, so we need to find a new church. Two days ago, I had about a two-hour conversation with this new pastor in which we discussed numerous topics briefly, and one of the things that briefly came up in the conversation was this question of the Impeccability of Christ. He made one short, succinct theological observation about this doctrine that truly caught my attention and has had me rethinking my own long-held position. So now I'll share what he said that just caught me and totally threw me off balance. His take on this question is that Jesus Christ, being totally different from the Father and the Holy Spirit, since neither of these persons possess a human nature (which is why I bolded your first sentence above), still had a couple of things in common with the first Adam. Like Adam, Christ was not born like any other man; and like Adam he was filled with the Holy Spirit, which is why I highlighted the other sentence in your post (I'll elaborate on this last point in a moment.)
So, this pastor's take on this question was this: Christ being fully divine could not have sinned; yet, Christ also being fully human could have sinned! This comment fully resonated with me immediately because I'm keenly aware that scripture is literally loaded with Paradoxes! He could not have, yet at the same time He could have!
We know that from Jesus' conception he was filled with the Holy Spirit. And we know Jesus always walked in the Spirit. And the Holy Spirit was Jesus' enabling power to perform signs, wonders and miracles. And He always did the things He saw the Father doing. Without doubt, this accounts for his title Faithful and True (Rev 19:11). Great was Jesus' faithfulness to his Father!
In a very similar fashion, the first Adam had to have been filled with the Holy Spirit because the only way he could have died on the day he disobeyed is for him to have been separated from the Spirit of Life.
These facts raise the very question that theologians in the Peccability Camp raise: Could Jesus been
truly fully human and at the same time not have the capability of sinning? Since the first Adam obviously had this capability, even with the tremendous spiritual advantages that he had over all his progeny, then could Jesus
in his humanity not also have this capability? While it's true that Christ never sinned -- that He was/is indeed the Spotless Lamb of God -- this must be owing to his divinity which the first Adam did not have.
This is why I'm rethinking this issue. Whether or not Jesus came into this world with a fallen nature is virtually a moot question since the first Adam sinned while not being encumbered by such a nature.
This is just food for thought that I'm throwing out there for reflection and consideration.