I believe Daniel 9:25-27 confirms that the nation of physical Israel would be restored at the beginning of the same 70 "weeks" in which the abomination of desolation and Christ's coming would occur. In the Hebrew, "week" is "shabuwa" (Strong's #7620); Strong's Hebrew Dictionary defines it literally as "sevened," and says it is based on the Hebrew word "shaba" (Strong's #7650), which it defines as "a prim. root; prop. to be complete," so that the word "week" may possibly represent "completion," which may refer in a sealed manner to the completion of time we call a year. "The words are closed up and sealed till the time of the end" (Daniel 12:9).
In the Old Testament the fig tree was a picture of the nation of physical Israel (Hosea 9:10, Joel 1:7), and in the New Testament Jesus' cursing of the fig tree was a picture of his coming judgment against the nation of physical Israel:
"And when he saw a fig tree in the way, he came to it, and found nothing thereon, but leaves only, and said unto it, Let no fruit grow on thee henceforward for ever. And presently the fig tree withered away... Therefore say I unto you, The kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof" (Matthew 21:19, 43).
"And Jesus answered and said unto it, No man eat fruit of thee hereafter for ever. And his disciples heard it. And they come to Jerusalem: and Jesus went into the temple, and began to cast out them that sold and bought in the temple, and overthrew the tables of the moneychangers, and the seats of them that sold doves" (Mark 11:14-15).
Note that in Hosea 9:10, in the Hebrew, the word after "bikkuwrah" ("as the firstripe") is "teen" (Strong's #8384), which Strong's Hebrew Dictionary defines as "the fig (tree or fruit)," so that the translation reads "I saw your fathers as the firstripe in the fig tree," which is a perfect contrast to Mark 11:13-14 when Jesus sees no firstripe in the fig tree, and to Matthew 21:19 where Jesus' preventing the barren fig tree from bearing fruit in the future is followed by his preventing the nation of physical Israel from bearing the fruits of the kingdom of God in Matthew 21:43.
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Heaven And Earth Pass Away?
In Matthew 24:35, I don't believe Jesus meant that heaven and earth shall pass away at the 2nd coming, but that his prophetic word is even more sure than the existence of heaven and earth, which shall one day pass away.
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"This" Generation?
Some wonder why Jesus used the near demonstrative "this generation" (he genea haute) instead of the far demonstrative "that generation," and why Jesus would refer to a future generation and not the generation that he was dealing with at that exact time. But while verses such as Matthew 23:36 say the judgment will come upon "this generation," note that that generation (genea) includes those in a past generation:
"That upon you may come all the righteous blood shed upon the earth, from the blood of righteous Abel unto the blood of Zacharias son of Barachias, whom YE slew between the temple and the altar. Verily I say unto you, All these things shall come upon this generation" (Matthew 23:35-36, 2 Chronicles 24:20-22).
Note that Jesus said "YE" slew Zacharias when addressing "this generation."
And note that that generation (genea) also includes those in a future generation which will see Jesus' 2nd coming: "YE shall not see me henceforth, till ye shall say, Blessed is he that cometh in the name of the Lord" (Matthew 23:39). So genea can refer to the nation of the Jews throughout their entire history. Note that genea is translated as "nation" in Philippians 2:15, so it can have more than one meaning.
Note that genea is translated as "times" in Acts 14:16; as "time" in Acts 15:21; and as "ages" in Ephesians 3:5, 3:21. Genea is used in Luke 16:8 to refer to worldly people throughout history, just as it is used in 1 Peter 2:9 to refer to believers throughout history.
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The Generation Annihilated?
"This generation shall not pass, till all these things be fulfilled" (Matthew 24:34). The generation of believers that lives to see the 2nd coming will only pass physically in that it will become regenerated into spiritual bodies in the resurrection which will occur at the 2nd coming: "There is a natural body, and there is a spiritual body... Flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption. Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. For this corruptible must put on incorruption, and this mortal must put on immortality" (1 Corinthians 15:44, 50-53). "In the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel" (Matthew 19:28).
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"All" The Trees?
Since the 2nd World War, we've seen many nations re-established as independent entities.
For example, we saw Albania, Belgium, Denmark, France, Greece, The Netherlands, and Norway restored to independence after German occupation ended; Korea and Thailand restored after Japanese occupation ended; Burma, India, and Israel restored after British occupation ended; Cambodia and Vietnam after French occupation ended; and Bulgaria, Czechoslovakia, Estonia, Hungary, Latvia, Lithuania, and Poland after Soviet occupation ended.
Just as Jesus' referring to the spring rebudding of "all" the trees doesn't have to refer to "all" nations, for not all trees are deciduous, so it doesn't have to refer to ancient nations, but could refer to nations that would exist at any time from Jesus' day up until the time the verse would be fulfilled, the independence of which would be lost and then restored.
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Babies Have To See It?
Some say because Jesus says "when you SEE these things," it indicates people older than babies. That's right. Note that we can see the rebudded fig tree (Israel) now, and people older than babies saw it bud the same year it happened. The verse doesn't require that the rebudding of the fig tree be seen by babies the same year it happened.
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Know That "It" Is Near?
I believe Matthew 24:33's "it" refers to the 2nd coming, for the entire context of the passage is to help the disciples not be deceived by false Christs (verses 24-28) nor to become complacent before his 2nd coming (verses 36-51). Therefore I believe Matthew 24:33's "all these things" can't refer to verses 27-31 because here Christ describes his 2nd coming. It would be like him saying, "When you see me coming, then know that my coming is near," which wouldn't make sense. So I believe verse 33 refers to verse 32's parable of the fig tree, and verse 34 refers to the generation that sees the rebudding of the fig tree.
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Fig Tree Never Bud Again?
Some say that Jesus told the cursed fig tree that it would never bud again, but Jesus only said that it would never bear fruit again (Matthew 21:19, 43).
Jesus did say the fig tree would put forth leaves again (Matthew 24:32).