So what about people who would have been dead so long that their bodies would have decayed?
I know I will catch some flack for this but that's OK. God has shown me this spiritual truth: The resurrection of the dead (usually called the "first resurrection") has already occurred in the spiritual realm. The first trumpet has sounded in the spiritual realm. Those Believers who die today go directly to Paradise (holding place for the righteous dead) to be with the Lord and those who were resurrected. See what Jesus told the thief on the cross. Paradise is not Heaven. Paradise is the "holding place" of the righteous dead awaiting. No Jesus is not just "sitting at the right hand of God". He is busy creating a place for us. After the judgments our eternal home will be the New Earth. See Rev. 20 & 21. We will have spiritual bodies.
Jesus is seated the scriptures say in heaven, Eph 1:20 which He worked in Christ when He raised Him from the dead and seated Him at His right hand in the heavenly places
, and also in Heb 8:1 Now this is the main point of the things we are saying: We have such a High Priest, who is seated at the right hand of the throne of the Majesty in the heavens
, These two should suffice as evidence for that and to say that He is not seated at the right hand of God because He is creating a place for us, how long does it take to speak something into existence? Besides, when He said that He was going to prepare a place for us, He could have meant that His dying is what prepared a way for us to be able to go where He would be, it surely wasn't that He was going to get a construction crew of angels and start building.
And the saints that will die during the tribulation are specifically said to be in the present of God before His throne, Rev 7:13-15 Then one of the elders answered, saying to me, “Who are these arrayed in white robes, and where did they come from?”
14 And I said to him, “Sir, you know.” So he said to me, “These are the ones who come out of the great tribulation, and washed their robes and made them white in the blood of the Lamb. 15 Therefore they are before the throne of God, and serve Him day and night in His temple. And He who sits on the throne will dwell among them
. So to be absent from the body is to be present with the Lord and He is in heaven.