When Jesus “comes” during the great tribulation, he will gather his remaining “chosen ones” to heaven,
When will they understand that Jesus does not come 'during' the GT, he comes AFTER it is cut short. Also, he doesn't gather his 'remaining' chosen ones at his coming, NO instead he gathers ALL of them (dead and living) at that time.
[Matt 24:21 for then there will be great tribulation such as has not occurred since the world’s beginning until now, no, nor will occur again. 22 In fact, unless those days were cut short, no flesh would be saved; but on account of the chosen ones those days will be cut short...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 And then the sign of the Son of man will appear in heaven, and then all the tribes of the earth will beat themselves in lamentation, and they will see the Son of man coming on the clouds of heaven with power and great glory. 31 And he will send forth his angels with a great trumpet sound, and they will gather his chosen ones together from the four winds, from one extremity of the heavens to their other extremity.]
[1 Thessalonians 4:15-17…the Lord himself will descend from heaven with a commanding call, with an archangel’s voice and with God’s trumpet, and those who are dead in union with Christ will rise first. Then we the living who are surviving will, at the same time with them, be caught away in clouds to meet the Lord in the air; and thus we shall always be with the Lord.]
[1 Corinthians 15:52 in the twinkling of an eye, at the last trumpet. For
the trumpet will sound, and the dead will be
raised up incorruptible, and we shall be changed.]