The question still remains, is the resurrection an event or is it a process?
Why does the question still remain, when I provided the answer? To be clear, below is the detailed account of the resurrection of the dead and the living being changed and caught up:
"Brothers and sisters, we do not want you to be uninformed about those who sleep in death, so that you do not grieve like the rest of mankind, who have no hope.
14For we believe that Jesus died and rose again, and so we believe that God will bring with Jesus those who have fallen asleep in him.
15According to the Lord’s word, we tell you that we who are still alive, who are left until the coming of the Lord, will certainly not precede those who have fallen asleep.
16For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet of God, and
the dead in Christ will rise first.
17After that,
we who are still alive and are left will be caught up together
with them in the clouds to meet the Lord in the air. And so we will be with the Lord forever.
18Therefore encourage one another with these words"
According to the scripture above, the Lord will descend from heaven and the dead in Christ will rise first, immortal and glorified. All of those in Christ who will have died in Christ from the on-set of the church up until the appearing of the Lord, their bodies will all be reanimated and raised from the dust of the earth and all at the same time. Immediately after the dead have been raised, those still alive in Christ will be transformed immortal and glorified and will be caught up with the dead who will have just resurrected. At that moment the entire church will be gathered together, from beginning to end, at the same time and same place in the air, where in fulfillment of John 14:1-3 the Lord will take the entire church back to the Father's house to those places that He went to prepare for us.
Therefore in answer to your question, the resurrection is an event which will take place in a flash, or as the Greek word atomos which is defined as a moment of time to short to be divided, is how quickly
this event of the resurrection and our transformation will take place.
As for the word "process," it describes a series of actions or steps taken in order to achieve a particular end, which is not the case with the resurrection and those being changed and caught up. To be clear, the resurrection will be an event which will take place in a Nano second to all who have died in Christ and to those in Christ who are still alive.
To be even clearer, the resurrection is not a process that takes place over time to each individual, but will be an event which happens all at once.
I hope that this answers your question.
Blessings in Christ!