Why did Peter ask Jesus what he would have in Matthew 19:27?

Les teaches that Peter had not forgotten the good things. He had forgotten what Jesus said about the kind of death He would die, but this promise stuck in his mind and he could not get it out. Peter was enraptured with the idea that it was just over the horizon: seven years of horrible experiences, but the end would be worth it all. In Matthew 19:27 Peter said, "Behold, we have forsaken all and followed thee. What shall we have therefore?" Peter already had his salvation; that was not what he was asking about. He was asking, "What am I going to have for a reward? I left my fishing business, I left my home up there in Galilee to follow you. What am I going to have?" Les points out the Lord did not rebuke him but answered him. Jesus said that in the regeneration, when the earth will be regenerated and brought back to the garden of Eden state, when the Son of Man shall sit in the throne of His glory, King of kings, they would sit on twelve thrones ruling the twelve tribes of Israel. Les explains this was what was on Peter's mind: if Israel would just repent and be converted and recognize that the one they killed was their Messiah. There is nothing here of the power of resurrection or the atoning shed blood, although in the mind of God that was all there.