Rev 7:9; After these things I looked, and behold, a great multitude which no one could count, from every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palm branches were in their hands;
Rev 7:10; and they cry out with a loud voice, saying, "Salvation to our God who sits on the throne, and to the Lamb."
Rev 7:11; 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,
Rev 7:12; saying, "Amen, blessing and glory and wisdom and thanksgiving and honor and power and might, be to our God forever and ever. Amen."
Rev 7:13; Then one of the elders answered, saying to me, "These who are clothed in the white robes, who are they, and where have they come from?"
Rev 7:14; I said to him, "My lord, you know." And he said to me, "These are the ones who come out of the great tribulation, and they have washed their robes and made them white in the blood of the Lamb.
Notice it says here.... not just Jews... it says from every nation, tribe and tongue. This includes Gentiles, and could be "mostly" Gentiles.
These are people who "came out of" the great tribulation. They weren't raptured before the great tribulation. They aren't just Jews.
Matt 24:20; "But pray that your flight will not be in the winter, or on a Sabbath.
Matt 24:21; "For then there will be a great tribulation, such as has not occurred since the beginning of the world until now, nor ever will.
Matt 24:22; "Unless those days had been cut short, no life would have been saved; but for the sake of the elect those days will be cut short.
Matt 24:23; "Then if anyone says to you, 'Behold, here is the Christ,' or 'There He is,' do not believe him.
When the great tribulation happens, the "elect" will still be on the earth. In fact the days will be "cut short" during this time, for the.. "sake of the elect".
Matt 24:29; "But 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 the sky, and the powers of the heavens will be shaken.
Matt 24:30; "And then the sign of the Son of Man will appear in the sky, and then all the tribes of the earth will mourn, and they will see the SON OF MAN COMING ON THE CLOUDS OF THE SKY with power and great glory.
Matt 24:31; "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.
It is "after" the tribulation of those day... that Jesus will return and gather up His elect.