Scriptures do not convey a message of pre-tribulation rapture of the Body of Christ nor separating the Body of Christ from restored Israel under King Jesus Christ / Yeshua ha'Mashiach.
Concerning the tribulation, God's elect will not fear, but for the sake of the elect those days will be cut short. The great tribulation will not be a tribulation at all, for those that are not from God's elect, as they will go on with their lives as they would have taken the mark of the beast. Pre-tribulation rapture is a false hope teaching not founded in scripture. The rapture is at the end of all ages, at the second coming of Yeshua ha'Mashiach / Jesus the Messiah, for his elect people, he will come down from heaven, the dead will be raised, and those that have died in Christ will together with those who are alive in Christ, meet Christ in the sky. Those that will be left behind at the rapture of Yeshua ha'Mashiach's / Jesus the Messiah's second coming, will be destroyed by the fire that will consume what is left of the earth.
Matthew 24 (ESV)
14 And this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations, and then the end will come.
21 For then there will be great tribulation, such as has not been from the beginning of the world until now, no, and never will be.
22 And if those days had not been cut short, no human being would be saved. But for the sake of the elect those days will be cut short.
23 Then if anyone says to you, 'Look, here is the Christ!' or 'There he is!' do not believe it.
24 For false christs and false prophets will arise and perform great signs and wonders, so as to lead astray, if possible, even the elect.
25 See, I have told you beforehand.
26 So, if they say to you, 'Look, he is in the wilderness,' do not go out. If they say, 'Look, he is in the inner rooms,' do not believe it.
27 For as the lightning comes from the east and shines as far as the west, so will be the coming of the Son of Man.
28 Wherever the corpse is, there the vultures will gather.
29 "Immediately after the tribulation of those days the sun will be darkened, and the moon will not give its light, and the stars will fall from heaven, and the powers of the heavens will be shaken.
30 Then will appear in heaven the sign of the Son of Man, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory.
2 Thessalonians 2 (ESV)
8 And then the lawless one will be revealed, whom the Lord Jesus will kill with the breath of his mouth and bring to nothing by the appearance of his coming.
9 The coming of the lawless one is by the activity of Satan with all power and false signs and wonders,
10 and with all wicked deception for those who are perishing, because they refused to love the truth and so be saved.
11 Therefore God sends them a strong delusion, so that they may believe what is false,
12 in order that all may be condemned who did not believe the truth but had pleasure in unrighteousness.
After the great tribulation, this is when the true rapture happens, at the return of Yeshua ha'Mashiach / Jesus the Messiah:
1 Thessalonians 4 (ESV)
15 For this we declare to you by a word from the Lord, that we who are alive, who are left until the coming of the Lord, will not precede those who have fallen asleep.
16 For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first.
17 Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord.
18 Therefore encourage one another with these words.
Revelation 7 (ESV)
9 After this I looked, and behold, a great multitude that no one could number, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands,
10 and crying out with a loud voice, "Salvation belongs to our God who sits on the throne, and to the Lamb!"
11 And all the angels were standing around the throne and around the elders and the four living creatures, and they fell on their faces before the throne and worshiped God,
12 saying, "Amen! Blessing and glory and wisdom and thanksgiving and honor and power and might be to our God forever and ever! Amen."
13 Then one of the elders addressed me, saying, "Who are these, clothed in white robes, and from where have they come?"
14 I said to him, "Sir, you know." And he said to me, "These are the ones coming out of the great tribulation. They have washed their robes and made them white in the blood of the Lamb.
15 "Therefore they are before the throne of God, and serve him day and night in his temple; and he who sits on the throne will shelter them with his presence.