Me4Him,
You say:
The "Wheat" alive at the time of Jesus' arrival are not "Changed" into "Glorified Bodies", they go into the MK to marry and repopulate the earth during the MK.
You are error.
In Luke 20:34-36 says: "And Jesus answering said unto them, The Children of this world marry, and are given in marriage. But they which shall be accounted worthy to obtain THAT WORLD(age), and the resurrection from the dead,
neither marry,
nor are given in marriage.
Neither can they die any more: for they are equal unto the angels; and are the children of God, being the children of the resurrection."
Christ tells us, in this present age('this world') since from the creation to present day, people are continue to get marry and produce children, because they are mortal and have flesh. But in the next age (world) to come follow at His coming, they will not have flesh or mortal, they shall become equal with angels, because they are called the children of God, being 'the children of resurrection'. Even, verse 36 says, "Neither can they die any more." Means that they will be immortal equal with angels, even be like Christ's.
In 1 Cor. 15:50-54 explaining clear when at the last trumpet sounds, all alive saints shall change into immortal being equal with angels. So, they will not have flesh and blood. All alive saints shall change into immortal be like Christ's. So, there will be NO saint to get marry again ever in the next age (Eternity) to come follow at Christ's coming.
Also, 1 Cor. 15:50 tells us, NO person with flesh and blood shall enter into the kingdom of God. That means, no sin shall be exist in the kingdom of God, because all unbelievers shall be thrown away into the lake of fire, all blood and flesh will be GONE. No more marry, no more produce children in the next age to come follow at Christ's coming.
I ask you question, WHO is the "wheat" of Matt. 13:30??
Will there be one suvrival tare remain after Christ's coming??
No. Christ tells us, that ALL every individual of 'tares' will be thrown away into everlasting fire. That means, no more sinners or unbelievers being exist in the kingdom of God beyond Christ's coming. Because Christ will removed "blood and flesh" away or destroyed. So, Christ shall put upon all alive believers into immortal, have new glorified bodies be like Christ, as they will be HOLY like Christ & angels in the next age to come.
That what Christ clear telling us what will be happen at His coming at the end of the world(age).
In Christ
Rev. 22:20 -Amen!