Hebrews 9:15 For this reason Christ is the mediator of a new covenant, that those who are called may receive the promised eternal inheritance—now that he has died as a ransom to set them free from the sins committed under the first covenant.
Sometimes we just don’t understand spiritual matters. The human mind is, in my opinion, incapable of comprehending to the fullest degree some principles in Scripture, today’s verse case in point.
First, it is difficult (maybe I’m alone in this) to understand the “New Covenant.” It is an amazing, binding agreement that God alone designed, initiated, implemented, and sustains, of which we are involved only as recipients of and participants in.
Second, that Christ Jesus would give His life as a ransom to satisfy the wrath of God, the Father, against sin, whereby you and I can be taken from sin and sin taken from us that we might be reconciled to the Father.
Third, eternity is far beyond the grasp of the human mind. We, who are finite, cannot know the expanse of infinity. Only by faith can we accept that we are eternal beings that will spend eternity either living in heavenly bliss with God, or in torment with the devil in hell.
One thing we must understand, if only by faith, is the fact that Christ Jesus, because of His sinless life, crucifixion, death, burial, and resurrection, and ascension to the right hand of majesty, is the only One who can qualify as mediator.
The Greek for “Mediator” is μεσίτης, mesitēs (mes-ee’-tace); a go between, that is, (simply) an internunciator*, or (by implication) a reconciler (intercessor)…
“Internunciator” is, evidently, too archaic to be listed as a modern word. “Enunciate” is not, however, and it means: to make a definite or systematic statement of: articulate, pronounce: to utter articulate sounds.
Christ is our go between, internunciator, and our reconciler. If you can believe that “He has died as a ransom to set them free from the sins committed under the first covenant” you will be free, and “If the Son therefore shall make you free, ye shall be free indeed” (John 8:36).