“And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.”
King James Version (KJV)
24:22 And unless those days were shortened - By the taking of Jerusalem sooner than could be expected: No flesh would be saved - The whole nation would be destroyed. But for the elect's sake - That is, for the sake of the Christians.
Mt 24:22 There should no flesh be saved. If such awful work should continue, it would exterminate the human race. For the elect's sake. On their account, because there is salt to save the earth, and end shall be put to the awful work of death. The "elect" are the believers in Christ (Ro 11:5-7).