FWIW, trying to explain anything to someone whose mind is already set is often a complete waste of time.
But in all the instances you have mentioned, there is a Biblical explanation.
Here is something most Christians don't know:
Jesus promised no less than FOUR times in the gospels that he would return to earth and his apostles would live to see it, yet he never showed up.
Let's see....
Paul believed fervently that Jesus would return in his lifetime:
"For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first: Then WE who are alive and remain shall be caught up together with them in the clouds to meet the Lord in the air. And thus we shall always be with the Lord." 1 Thessolonians 4:16-17
Paul had no idea when Christ would return...God told no one, not even Jesus. (Matthew 24:36)
He knew like all the other apostles that Jesus promised to return, but they did not know when. (John 14:1-3)
Now Paul may have put this idea into the heads of the gospel writers when they started writing the gospels. They had Jesus make these four prophesies that he would return before the apostles died:
“For the Son of Man is going to come in the glory of His Father with His angels, and will then repay every man according to his deeds. Truly I say to you, there are some of those who are standing here who will not taste death until they see the Son of Man coming in His kingdom.“ (Matthew 16: 27, 28)
Again you only have a very limited view of his words.
When Jesus made that promise, it says in Matthew 17:1-2...
"Six days later Jesus took Peter and James and his brother John along and led them up into a lofty mountain by themselves. 2 And he was transfigured before them; his face shone as the sun, and his outer garments became brilliant as the light."
This was the fulfillment of that promise. They saw the King of God's Kingdom in all his glory.
For me, this is the one that cannot be excused away with rationalizations like "Jesus was referring to the future generation", or "Jesus was referring to God's time which could be thousands of years in the future". We have Jesus referring directly to the people listening to him when he made that failed prophecy "some of you standing here will not taste death until you see me return"
He did not say "until you see me return" he said that they would see him "coming in his Kingdom" and the transfiguration was exactly that. Peter James and John were privileged to see it. They were the "some of you" that Jesus spoke of.
...they will see the Son of Man coming on the clouds of the sky with power and great glory. And He will send forth His angels with a great trumpet and they will gather together His elect from the four winds, from one end of the sky to the other. Truly I say to you, this generation will not pass away until all these things take place.“ (Matthew 24: 25-34)
“Then they will see the Son of Man coming in clouds with great power and glory. And then He will send forth the angels, and will gather together His elect from the four winds, from the farthest end of the earth to the farthest end of heaven. Truly I say to you, this generation will not pass away until all these things take place…“ (Mark 13:26-30)
What "generation" was he speaking about? The generation of the elect...those chosen for rulership and priestly roles in the Kingdom. (Revelation 20:6) Members of that 'generation' would continue to be chosen right up to the "time of the end" because of the apostasy that was foretold for Christianity. When that apostasy was in full swing, then the "wheat" would be overtaken by the "weeds" of counterfeit Christianity until the time of the end, when it was near the harvest time. Only then when true Christianity was re-established, would the full complement be complete. This is when the words of Paul would be fulfilled. (1 Thessalonians 4:13-17)
Jesus "coming" as judge of all the earth is a completely separate event to his "parousia". He promised his disciples that he would be "with" them right up until the end of the present world system of things. (Matthew 28:18-20)
There would still be some of that "generation" still left on earth who would be taken up instantaneously at that time.
Here in Chap 10 Jesus is giving his apostles instructions on how they should conduct themselves when he sends them out to do God's work
Truly I tell you, you will not finish going through the towns of Israel before the Son of Man comes. (Matthew 10:23)
If you read Matthew 24, and the prophesy that Jesus gave his apostles concerning the time of the end, you will see a much mistranslated word. In many Bibles it reads...
"Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?" (ASV)
In the Greek, it does not use the word "coming" but "presence" (parousia) which conveys very different circumstances. If I tell you that I am "present" at an event, that does not mean that I am "coming"...it means that I am already here.
So the "presence" of Jesus Christ as King would need a "sign" to indicate that it was already happening. Jesus gave this composite sign which we have been witnessing under our noses for the last 100 years, beginning with the Great War and continuing to gain momentum to our day. We are deep into "the time of the end".
Not finishing the work of completing all the towns was an indication of how big the assignment was of "preaching the good news of the Kingdom in all the inhabited earth". (Matthew 24:14) Certainly not a job for single individuals, but the work of a well directed and organized global body.
Naturally Jesus never showed up. Why? Because we can assume he never said he would return--this was all invention by the gospel writers probably based on Paul's belief Jesus would return and Paul would live to see it. There are five rationalizations Christians have come up with for Jesus' no-show. All are patently ridiculous but you can read them in the link below:
I have no need to consult your link.....all I need to know is right there in the Bible....plain as the nose on your face if you know what you're looking at...which apparently many people don't. We will just let Jesus show you that he is already here...and has been for quite some time.....his 'presence' was not to be a time of peace and love....just the opposite as his opposers pull out all the stops to prop up their failed system.