How was he able to make this salvation possible for us?

Jesus could not do it while He was in heaven. No, He had to relinquish His God-likeness [make Himself of no reputation] and become like a man. “And being found in appearance as a man, He humbled Himself and became obedient to the point of death, even the death of the cross.” Phil. 2:8. This happened in the following way:

“Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same, that through death He might destroy him who had the power of death, that is, the devil, and release those who through fear of death were all their lifetime subject to bondage.” CH 2:14-15. There was no other way for Him to do it. It had to be done in this way. Therefore, since Jesus was able to destroy the power of the devil, through death, by partaking of flesh and blood like us, it is obvious that the Antichrist is determined to do away with this truth and this work, and he has succeeded to an enormous degree.

It is because of this that the apostle has given us this truth as evidence of whether a prophet is true or false: “By this you know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh is of God, and every spirit that does not confess that Jesus Christ has come in the flesh is not of God. And this is the spirit of the Antichrist, which you have heard was coming, and is now already in the world.” 1 John 4:2-3. “For many deceivers have gone out into the world who do not confess Jesus Christ as coming in the flesh. This is a deceiver and an antichrist.” 2 John 7.

There were already many of these deceivers in the time of the apostles. Religious people nowadays are so deceived that they believe we make Jesus impure when we declare this truth, that He partook of flesh and blood like us.

Thus we can see how terribly the spirit of Antichrist has deceived people, and in so doing has made both Jesus’ victory over the devil and this glorious salvation ineffective. The result is that people are left only with the forgiveness of sins, which they had before Jesus came, through the sacrificing of animals and by the law. In other words, they have no opportunity to become Jesus’ brethren.

“For both He who sanctifies and those who are being sanctified are all of one, for which reason He is not ashamed to call them brethren.” CH 2:11. “Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same.” CH 2:14, etc. “For indeed He does not give aid to angels, but He does give aid to the seed of Abraham. Therefore, in all things He had to be made like His brethren, that He might be a merciful and faithful High Priest in things pertaining to God, to make propitiation for the sins of the people.” CH 2:16-17. Here we see that in no other way could He have become a merciful High Priest. “For in that He Himself has suffered, being tempted, He is able to aid those who are tempted.” Verse 18. Again, we understand that unless He had shared in flesh and blood, like the seed of Abraham, He could not have been tempted like them, nor would He have been able to help them. It is therefore clear why the spirit of Antichrist resists this truth so adamantly.