But the New Testament is unique in that it requires the resurrection and ascension of the testator. Why? Because the testator is administering the new testament from heaven as High Priest and King at the same time--and in a never ending eternal tabernacle.
In other words, Jesus will never die again, because He is eternal physically:
1Now the main point in what has been said is this: we have such a high priest, who has taken His seat at the right hand of the throne of the Majesty in the heavens,
2a minister in the sanctuary and in the true tabernacle, which the Lord pitched, not man.
3For every high priest is appointed to offer both gifts and sacrifices; so it is necessary that this high priest also have something to offer.
4Now if He were on earth, He would not be a priest at all, since there are those who offer the gifts according to the Law;
5who serve a copy and shadow of the heavenly things, just as Moses was warned by God when he was about to erect the tabernacle; for, “SEE,” He says, “THAT YOU MAKE all things ACCORDING TO THE PATTERN WHICH WAS SHOWN YOU ON THE MOUNTAIN.”
6But now He has obtained a more excellent ministry, by as much as He is also the mediator of a better covenant, which has been enacted on better promises.
17When I saw Him, I fell at His feet like a dead man. And He placed His right hand on me, saying, “Do not be afraid; I am the first and the last,
18and the living One; and I was dead, and behold, I am alive forevermore, and I have the keys of death and of Hades.
Indeed, Jesus is the mediator of the new covenant--as King:
and Priest:I Tim. 6
13I charge you in the presence of God, who gives life to all things, and of Christ Jesus, who testified the good confession before Pontius Pilate,
14that you keep the commandment without stain or reproach until the appearing of our Lord Jesus Christ,
15which He will bring about at the proper time—He who is the blessed and only Sovereign, the King of kings and Lord of lords,
16who alone possesses immortality and dwells in unapproachable light, whom no man has seen or can see. To Him be honor and eternal dominion! Amen.
18For, on the one hand, there is a setting aside of a former commandment because of its weakness and uselessness
19(for the Law made nothing perfect), and on the other hand there is a bringing in of a better hope, through which we draw near to God.
20And inasmuch as it was not without an oath
21(for they indeed became priests without an oath, but He with an oath through the One who said to Him,
“THE LORD HAS SWORN
AND WILL NOT CHANGE HIS MIND,
‘YOU ARE A PRIEST FOREVER’”);
22so much the more also Jesus has become the guarantee of a better covenant.