That is a long exhortation, but you begin with an assumption--with what you "expect." That being that you "expect" that the timing of this coming or presence is connected to the end of the age because He says "and" the end of the age. However that does not necessarily connected, just as "the beginning and the end" are not necessarily connected. Now, I do not mean that they are not, but rather that they are not connected in the way you assume--that is, as being at the end of the age, as it is commonly understood.
This was determined in hindsight, as many prophesies are only clear once they have been fulfilled.
Just as the Jews were expecting their Messiah when Jesus arrived on the scene, (according to Daniel's prophesy) so we expect the Messiah's return in this "time of the end" because Daniel told us who would be ruling the nations at this juncture.
He told us that
"In the days of those kings, the God of heaven will set up a kingdom that will never be destroyed. And this kingdom will not be passed on to any other people. It will crush and put an end to all these kingdoms, and it alone will stand forever". (Daniel 2:44)
He interpreted Nebuchadnezzar's dream of the huge image made up of different body parts represented by different metals in order of value, picturing rulerships down through the centuries, until the rule of the final kings......the time period we are living in now. Jesus told us to "keep on the watch" so we will know by the "signs" he gave, in Matthew 24, that his return had taken place.
It would appear that you mean at the end of the world...which is the end of times or the end of the age for some. But the end of the world for someone who dies today, is today, while the end of the world for the last person to leave this world is rather the actual end of the world as it is commonly thought to mean.
The end of the age is not the end of the world as many think. The planet isn't going anywhere but the end of the wicked system implemented by the devil is. These are "the last days" and this time period has been set aside for all the features of the sign Jesus gave in Matthew 24 to be fulfilled. Only at the end of these allotted days will "the end" come, after mankind has been given notice just as the people of Noah's day were.
Jesus said his disciples would receive the same response to his message as the people did to Noah's warning. (Matthew 24:37-39)
The end of one's life does not mean that they will never live on earth again as this was God's purpose for mankind all along. If he had wanted us to live in heaven, he would have put us there in the first place, like he did the angels. The earth was made for man...and man for the earth. I think that is obvious.
Going to heaven was never in the equation when God created Adam and his wife. They had opportunity for everlasting life right here on earth in paradise, but they lost it due to disobedience. Jesus came so that their children, born in sin through no fault on their part, could get it back.
To which I submit, is the same with God, and only different with people and with the world; and yet because the terms are God's rather than that of the world...anyone who "expected" the terms to be that of people and the world...would be "when you expect" and therefore, wrong. Which is the point of the tread--that we should not lean on our own understanding and "expect" in error.
If Jesus told us to expect his return, and with the calculation made by the Jews in the first century, according to Daniel's prophesy, Messiah was due to make his appearance in 29 C.E. Jesus came right on time, (they knew the year but not the day or the hour) The majority of Jews however, failed to recognize him because their religious Leaders had led them astray. He said that many false Christs would come and they did....but none of them were like Jesus.
Using that same calculation, we have discerned that Jesus was to return in 1914 C.E....and the features of the sign Jesus gave show us that these things did indeed occur just as Jesus said they would. So Jesus "parousia" or "presence" is a completely different event to his "coming" to judge the world of wicked mankind....we are staring down the barrel of that right now.
Peter wrote...
"But if anyone suffers as a Christian, let him not feel ashamed, but let him keep on glorifying God while bearing this name. 17 For it is the appointed time for the judgment to start with the house of God. Now if it starts first with us, what will the outcome be for those who are not obedient to the good news of God? 18 “And if the righteous man is being saved with difficulty, what will happen to the ungodly man and the sinner?” 19 So, then, let those who are suffering in harmony with the will of God keep on entrusting themselves* to a faithful Creator while they are doing good." (1 Peter 4:16-19)
Judgment will "start with the house of God" because it is they who have been used most prominently in the devil's schemes to mislead those who thought they were following Christ, when their conduct said otherwise.
When Jesus comes, who will he claim as his own? Those disobeying him....putting on a show with their miracles and spiritual gifts?....or will it be those who claim to have God's spirit guiding them, even though they are a lone voice on the internet?
Or will it be those who are despised for showing them a different "Christianity" where love, unity and loyalty to Christ are the most important elements?
I know where my loyalties lie....