Some individuals do not understand the truth concerning some verses about the coming of Jesus. Well, am not going to tell you what I think but what the Bible say regarding this matter. You see, when we read the Bible, we are to not make conclusions on one or two to three verses but have to analyze through the Guiding of the Holy Spirit that we understand what scripture has to say. But if we don't we will just think the Bible contradict itself, but the Bible does not do so.
Here is a principle we should follow when studying scripture:
"For precept must be upon precept; line upon line; here a little, and there a little."- Isaiah 28:10 Which simply means we must compare scripture with scripture.
So lets get started with these minor problems that some skeptics claim Christ did not fulfill his promise of coming during his days of the disciples.
Problems & solutions
 Matthew 16:27,28
"For the Son of man shall come in the glory of his Father with his angels; and shall reward every man according to his works."- verse 27, when you study this verse, be sure that you have to read the previous verses before it. And yes this verse is talking about the second coming but the following verse as you will see has nothing to do with this verse, and note the words which Christ utter:
"Verily I say unto you, There be some among standing here, which shall not taste death, till they see the Son of man coming in his kingdom"-verse 28, you may say" there he said it, you see he didn't come during his disciples, he lied." WHOOO! Hold it right there dear sister or sir. Let us reason. Remember the principle?
Which kingdom was Christ talking about? I mean, Which kingdom did he recognize as his at the time?
It is written; "Jesus answered, My kingdom is not of this world: if my kingdom were of this world, then would my servants fight, that I should not be delivered to the Jews: but now is my kingdom not from hence"-John 18:36. So Christ when he said in verse 28 that some will not die before, note the "till" in that verse, they see Him coming to his kingdom he was NOT TALKING ABOUT COMING TO EARTH SINCE HIS KINGDOM IS NOT OF THIS WORLD. And we know from scripture that Christ was preaching "the kingdom of heaven is at hand", which we know that heaven is Christ Kingdom. So Christ was talking about the kingdom of heaven, not earth.
Since Christ was actually saying "some...shall not taste death, till they see the Son of man coming in his kingdom" whereby he was talking about the kingdom of heaven, did some in deed witnessed Him coming to heaven? Yes, then who?
The disciples, it says;"to whom also he[Jesus] shewed himself alive after his passion by many infallible proofs, being seen of them forty days, and speaking of the things pertaining to the KINGDOM OF GOD...And when he[Jesus] had spoken these things, while they beheld, he was TAKEN UP; and a cloud received him OUT OF THEIR SIGHT. And while they looked steadfastly TOWARD HEAVEN as he went up, two men stood by them in white apparel; which also said, Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from from ye INTO HEAVEN, shall come in like manner as ye have SEEN HIM GO INTO HEAVEN."- Acts 1:3,9-11. WOW! GOD IS POWERFUL. So you see, Christ spoke truth when he said what he said in Matthew 16:28, in deed some witnessed his coming to his kingdom of heaven. The disciples witness this event before they died. And interesting enough the "two men with white apparel" now turned their mind with a promise of the second coming, note the men did not say he will come at their time. Was Christ right? Absolutely. So what skeptics say about Matthew 16:27,28 is actually a lie. They put words in Jesus, they do not understand what Christ is saying.
 Matthew 24: 33, 34
"So likewise ye, when ye shall see all this things, know that it is near, even at the doors.Verily I say unto you, THIS GENERATION SHALL NOT PASS, TILL ALL THESE THINGS BE FULFILLED" verses 33 and 34...Hold it right there!
Which generation was Jesus talking about?
It is a vital thing to go back to the previous verses; "Immediately after the tribulation of those days shall the sun be darkened, and the moon give her light, and the stars fall from heaven, and the powers of the heavens shall be shaken...and they shall see the Son of man coming in the clouds of heaven with power and great glory."- verses 29,30, then Christ give a parable for further understanding. Then he then later say,"This generation shall not pass, till all THESE THINGS be fulfilled." Which things is Christ talking about? well the things which he just mentioned. Meaning Christ is saying "this generation" which one? The generation which will witness tribulation, the sun been dark, the moon giving her light not anymore, the stars falling...this generation Christ is saying will not pass before all this signs he spoke of being fulfilled, then the very generation will witness His coming;. Wow! You got to take contextual meaning hey. Jesus is not talking about the generation which he was in at present but the one which will witness the signs which he mentioned. You see, skeptics get it wrong again.
 Isaiah 11
Verse 1 talk about a rod "out of the stem of Jesse" Whom a "Branch shall come out of his roots" Who was Jesse?, "...and Jesse begat David" So Jesse is the father of king David, which means verse one, who is called the Branch was to decent from the line of Jesse and David. It is not a mistake that in Matthew 1 that we see Jesus coming exactly from the lineage of David. From 2- Christ fulfilled and about the destruction of the wicked is in future, read the Four Gospels. From 6-9 that will happen in the new earth, read Isaiah 64-66. Then from verse 9-16, future events, in the new testaments, read Paul, God's people are now spiritual Israel those who believe in Him, is no longer literal Israel. But any Jew can be saved but they'll have to follow Christ.
Hehe! the Jews say this and that about Christ not fulfilling Messianic prophecies, so Christ is not the Messiah...Wait...Let me quote something from Judaism:
"May the bones of the hands and the bones of the fingures decay and decompose, of him who turn the pages of the book of Daniel 9:24-27, and may his memory rot from off the face of the earth forever."- Rabbinic Curse, Talmudic Law, p.978, Section 2, Line 28. Why do they not want he masses to read it? Because Daniel 9:24-27 is a timeline which show the coming of the Messiah and him coming to die for the world, and it was exactly fulfilled in time in Jesus. So if Judaism were to read and understand, the whole of Judaism would be destroyed.
So skeptics who read info from skeptics of the Bible, do you think they will tell you the truth? NO! Here is an advice, you go and read the Bible for yourself and see what Jesus have to say.
Glory to God.