Not what is happening with us, as the debate between Luther and Catholic scholars goes, not to look merely at the man and see if the coating of grace effaces the sloppy soul underneath - gold-covered turds some said once.

No, the question itself must go further, one cannot answer whether the soul itself is changed and changing through ongoing conversion and grace intermixed with primitive learning energies called will and mind and freedom until one sees what exactly happened at the cross.

Did Jesus merely put on the guise of taking our sin, or did he actually -ghastly thought- become a sinner?

It may seem like semantics, no, to say such words without context.  parse with me briefly.  Look here, there is a stain on your soul, you unregenerate, living in the filth of your ancestry.                          

But what, flesh is made by spirit spoken into existence at the dawn...

If Jesus did not become a sinner (or sin itself), then we are merely turds disguised in manipulations of biblical text spawned for a moment, capable of such atrocity because we have failed to live the command - LOVE THY NEIGHBOUR!

But if he did, truly became sin itself, the holy father truly had to look away and then the son fell to hell itself, but there seeing in himself and in those gathered there in masses stricken, the light shone on and on and on...

"Come with me!" he broke in, let us go and see the world outside these caves!  You are living shadows, the reality of your self is in the light, full-grown and capable like the day you were made in the plan above and beyond, for all time and all times.

Have a crumb.