Non sequitur. Your assertion makes no sense. Jesus didn't say in Matthew 24 that the Son of Man would come and that 'Israel' would be gathered. Rather, He speaks of the elect being gathered.
It's understood. Because Jesus at that time was referring back to what they already knew about, from Isaiah 24:9,12-13 (speaking of "Israel")... regarding when the "great" trumpet will be sounded, and the elect of Israel will be gathered together into one place upon the earth--"to worship the Lord in the holy mount, at Jerusalem"--gathered from the extremities, that is, "from the four winds" to which they had been judicially "scattered" (this is not true of "the Church which is His body" / us).
Please carefully read Matthew 24:29-31 and compare it to both Isaiah 24:9,12-13--"great" trumpet--(coupled with Rom11:27), and Daniel 9:24.
There is no "rapture / snatch / caught up" being spoken of in Matthew 24 or anywhere in His Olivet Discourse.