The Scripture says "He who knew no sin became sin for us," so there's no need to throw anything out!

If Jesus had to become what He came to save, then He would have had to have a carnal mind. I don't think He did.

T:The Scripture says "He who knew no sin became sin for us," so there's no need to throw anything out!

A:That would be true, if that's all Scripture was. But there are other verses. Anyway, Jesus became sin. Is anyone else "sin" that we know of?

Sin is a personal matter. A man is guilty only of his own sins, and not of those which another has committed. Now I can not sin where I am not, but only where I am. Sin is in the heart of man; "for from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness; all these evil things come from within." Mark 7:21-23. "The heart is deceitful above all things, and desperately wicked." Jer.17:9. Sin is in every fiber of our being by nature. We are born in sin, and our life is sin, so that sin can not be taken from us without taking our life. What I need is freedom from my own personal sin,--that sin which not only has been committed by me personally, but which dwells in the heart,--the sin which constitutes the whole of my life.

"His own iniquities shall take the wicked himself, and he shall be holden with the cords of his sins." Prov.5:22. "For though thou wash thee with niter, and take thee much soap, yet thine iniquity is marked before Me, saith the Lord." Jer.2:22. My sin is committed by myself, in myself, and I can not separate it from me. Cast it on the Lord? Ah, yes, that is right, but how? Can I gather it up in my hands, and cast it from me, so that it will light upon Him?--I can not. If I could separate it but a hair's breadth from me, then I should be safe, no matter what became of it, since it would not be found in me. In that case I could dispense with Christ; for if sin were not found on me, it would make no matter to me where it was found. If I could gather up my sins so as to lay them upon Christ crucified apart from me, then I would not need to put them on Him. They would then be away from me, and that would clear me. But no works of any kind that I can do can save me; therefore, all my efforts to separate myself from my sins are unavailing.

"I am crucified with Christ; nevertheless I live; yet not I, but Christ liveth in me." Christ was crucified; He was "delivered for our offenses, and raised again for our justification." Rom.4:25. But unless we are crucified with Him, His death and resurrection profit us nothing. If the cross of Christ is separated from us, and outside of us, even though it be but by so much as a moment of time and an hair's breadth of space, it is to us all the same as if He were not crucified. No one was ever saved simply by looking forward to a cross to be erected and a Christ to be crucified at some indefinite time in the future, and no one can now be saved simply by believing that at a certain time in the past Christ was crucified. No; if men would see Christ crucified, they must look neither forward nor backward, but upward; for the arms of the cross that was erected on Calvary reach from Paradise lost to Paradise restored, and embrace the whole world of sin. The crucifixion of Christ is not a thing of but a single day. He is "the Lamb that hath been slain from the foundation of the world" (Rev.13:8, R.V.); and the pangs of Calvary will not be ended as long as a single sin or sinner exists in the universe. Even now Christ bears the sins of the whole world, for "in Him all things consist;" and when at the last He is obliged to cut off the irreclaimably wicked in the lake of fire, the anguish which they suffer will be only that which the Christ whom they have rejected suffered on the cross. (The Glad Tidings)

T:"What He has not assumed, He has not healed."

A:Sin is not healed; it is crucified.

Waggoner mentions something like this in his comments on the carnal mind.

A little thought will be sufficient to show anybody that if Christ took upon Himself the likeness of man in order that He might redeem man, it must have been sinful man that He was made like, for it is sinful man that He came to redeem. Death could have no power over a sinless man, as Adam was in Eden, and it could not have had any power over Christ, if the Lord had not laid on Him the iniquity of us all. Moreover, the fact that Christ took upon Himself the flesh, not of a sinless being, but of a sinful man, that is, that the flesh which He assumed had all the weaknesses and sinful tendencies to which fallen human nature is subject, is shown by the statement that He "was made of the seed of David according to the flesh." David had all the passions of human nature. He says of himself, "Behold I was shapen in iniquity; and in sin did my mother conceive me." Ps. 51:5. (Christ and His Righteousness)

If Jesus had to become what He came to save, then He would have had to have a carnal mind. I don't think He did.

Christ assumed humanity, not sin.

Waggoner expressed a similar thought to Gregory:

Christ did not have to actually sin in order to heal us.

We are humanity WITH sin.

IOW, He did not have to be what He wanted to heal. That's what I said. That's where Gregory was wrong.

And I would put it even stronger than you did. Jesus COULD NOT actually sin in order to heal us.

(Christ) assumed humanity, that humanity might touch humanity, while his divinity grasped the throne of God.(Special Testimonies On Education, page 67)

so he did assume humanity's sinfulness without indulging in its sinfulness, not so.