How Do You Reconcile Biblical Prophecy With the Ressurection Event?

Isaiah 65:20-25 speaks of a future time when people will live significantly longer lives, with those dying at 100 being considered young.

The Ressurection Event is when Christ returns and puts an end to death, leading to an experience of Eternal Life in a New Creation.

The prophecy in Isaiah indicates the lifespans of humanity will drastically increase during a period of time when death will still exist.

Do you believe Christ causes the increase directly upon His return? Do you believe humanity will make scientific breakthroughs that will cause this increase before Christ appears? Or do you believe that some time will pass between the return of Christ, and the experience of the ressurection and eternal life? Or do you have another completely different understanding of the text or how it all transpires?

New Heavens and a New Earth
17 “See, I will create
new heavens and a new earth.
The former things will not be remembered,
nor will they come to mind.
18 But be glad and rejoice forever
in what I will create,
for I will create Jerusalem to be a delight
and its people a joy.
19 I will rejoice over Jerusalem
and take delight in my people;
the sound of weeping and of crying
will be heard in it no more.

It is a prophercy about the return of Jesus.
But remember the prophets used language the people of that time would understand, so talk about a new kingdom, of health and long life wes symbolic for Jesus’s return,