When Jesus returns He will complete redemption by translating our soul and body (which are currently corrupted and corruptible) into incorruptible Rom 8:23.

When will this happen?
At the EndOfTheAge of GraceThroughFaith and the GreatTribulation.

At His return Jesus will -> translate us 1Co 15:52 -> destroy every ChildOfSatan Mat 13:40 -> establish the MillennialKingdom Rev 20:4.

It is interesting that this verse in KJV says `the great God and our Saviour Jesus Christ` will appear.
Does that mean we will see two beings?
Why doesn`t Rev 1:7 use the phrase `and every eye will see THEM`?

Answer: Jesus is our great God.
The correct translation is found in the JesusBibleVersion as shown here.