He will be conducting His work that will lead to the end of death...
You mean every work of His but His work as High Priest:
- Hebrews 8:4
If He were on earth, He would not be a priest...
So much for the unchangeable priesthood of Christ. No wonder you Premillennialists are so eager for a return of the Levitical sacrifices of the lambs. You have lost your High Priest and will once again need to return to the shadow of things that were to hope in your salvation.
It is at this point that you need to make a new line to your pretty charts that say Premillennialism has a changeable priesthood of Christ.