How do they do it?

I had asked this a few times before, but I need to ask it again, since no one has cleared this up for me:

When does the LORD disannul the priesthood of Melchisedec to reinstate the priesthood of Aaron?

That would have to be the case for a rebuilt temple and sacrifices therein.

I was always taught that the antichrist goes into the rebuilt temple, stops the sacrifices, and makes it desolate.

However, the temple became desolate when Jesus declared it so, and walked out at the end of Matthew 23, and the start of 24:

Matthew 23:38 Behold, your house is left unto you desolate.

39 For I say unto you, Ye shall not see me henceforth, till ye shall say, Blessed is he that cometh in the name of the Lord.

Matthew 24:1 And Jesus went out, and departed from the temple: and his disciples came to him for to shew him the buildings of the temple.

So, how can a modern day Aaronic priesthood un-desolate what Jesus pronounced desolate?

How could they then disannul the everlasting priesthood of Melchisedec, and re-establish their own priesthood again?

How could a priesthood, that until this day, still denies that Jesus is their Messiah, reject the new covenant, and go back to the old?

Would not such a thing be an affront to the LORD?

Would not the blood sacrifices of animals at this time be a mockery of the blood of Jesus?

No, they have no power to undo the Melchisedec priesthood.

Jesus is a priest forever after the order of Mechisedec.

Hebrews 4:14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.

Hebrews 5:5 So also Christ glorified not himself to be made an high priest; but he that said unto him, Thou art my Son, to day have I begotten thee.

6 As he saith also in another place, Thou art a priest for ever after the order of Melchisedec.

10 Called of God an high priest after the order of Melchisedec.

Hebrews 6:20 Whither the forerunner is for us entered, even Jesus, made an high priest for ever after the order of Melchisedec.

The priesthood has changed, and the law has changed:

Hebrews 7:11 If therefore perfection were by the Levitical priesthood, (for under it the people received the law,) what further need was there that another priest should rise after the order of Melchisedec, and not be called after the order of Aaron?

12 For the priesthood being changed, there is made of necessity a change also of the law.

The Aaronic priesthood, under the law, has been disannuled:

Hebrews 7:15 And it is yet far more evident: for that after the similitude of Melchisedec there ariseth another priest,

16 Who is made, not after the law of a carnal commandment, but after the power of an endless life.

17 For he testifieth, Thou art a priest for ever after the order of Melchisedec.

18 For there is verily a disannulling of the commandment going before for the weakness and unprofitableness thereof.

The new covenant priesthood is an unchangeable priesthood:

Hebrews 7:21 (For those priests were made without an oath; but this with an oath by him that said unto him, The Lord sware and will not repent, Thou art a priest for ever after the order of Melchisedec:)

24 But this man, because he continueth ever, hath an unchangeable priesthood.

The old covenant, in which was the Aaronic priesthood, was said to be decaying and waxing old:

Hebrews 8:7 For if that first covenant had been faultless, then should no place have been sought for the second.

13 In that he saith, A new covenant, he hath made the first old. Now that which decayeth and waxeth old is ready to vanish away.

The LORD took away the first covenant:

Hebrews 10:8 Above when he said, Sacrifice and offering and burnt offerings and offering for sin thou wouldest not, neither hadst pleasure therein; which are offered by the law;

9 Then said he, Lo, I come to do thy will, O God. He taketh away the first, that he may establish the second.

There are now no more sacrifices for sin:

Hebrews 10:18 Now where remission of these is, there is no more offering for sin.

So, if a rebellious, modern day, Aaronic priesthood, continues to deny Jesus as their Messiah, then attempts to abrogate the new covenant,

then attempts to abrogate Jesus' priesthood of Melchisedec, then attempts to rebuild the temple after Jesus pronounced it desolate,

then attempts to reinstate blood sacrifices of bulls and goats, would that be like:

Hebrews 10:29 Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?

How can a rebuilt temple be made un-desolate, after Jesus pronounced it desolate?

When, and how, does the temple mount first become "un-desolate" again, before the beast can desolate the third temple?

The temple became desolate when Jesus departed from there, after he had preached against the scribes and Pharisees.

Jesus, who is God manifest in the flesh, with all the fulness of the Godhead bodily:

I Timothy 3:16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.

Colossians 2:9 For in him dwelleth all the fulness of the Godhead bodily.

So, when Jesus departed from the temple, it was like Ichabod.

It was like the Ichabod in I Samuel 4 from the tabernacle, or in Ezekiel 10 from the first temple.

Then the second temple became Ichabod when Jesus departed.

Jesus then said that they would also not see him from that point forward,

until they say, "Blessed is he that cometh in the name of the Lord".

Matthew 23:38 Behold, your house is left unto you desolate.

39 For I say unto you, Ye shall not see me henceforth, till ye shall say, Blessed is he that cometh in the name of the Lord.

Matthew 24:1 And Jesus went out, and departed from the temple: and his disciples came to him for to shew him the buildings of the temple.

So, for the next nearly 40 years, the second temple stood in desolation, until it was finally torn down by the Romans.

During those years, unbelieving priests trod under foot the blood of the Son of God, by continuing with the blood of bulls and goats.

Those sacrifices, by those priests who despised and rejected Jesus, were an abomination, up until the Romans destroyed the temple.

So, what if in the near future, a third temple is rebuilt?

Then blood sacrifices would be started again by priests who still despise and reject Jesus and his blood.

Why would the blood of bulls and goats suddenly be accepted again by the LORD, when the blood of Jesus has already been shed?

Would that not still be an abomination, because of their unbelief and rejection of the blood of Jesus?

So, how could those unacceptable sacrifices suddenly make the temple "un-desolate" again, without Jesus?

I've been taught for years, that the beast will put an image in the third temple and make it desolate.

My question is what would make it "un-desolate" again, without Jesus, so that the beast could then make it desolate?