There is a third group which will populate the Millennial Kingdom. Those born physically during the 1000 year period. Isaiah 65:20 is an interesting Millennial scripture. "There shall be no more thence an infant of days, nor an old man that hath not filled his days: for the child shall die an hundred years old; but the sinner being an hundred years old shall be accursed."
I was taught that this passage is showing those born in the Millennial. Those who trust Christ and then fall into sin are seen as being accursed at 100 years old, but still living in the Millennial. While the ones who reject Christ during that time will be given 100 years to trust Christ and if they haven't then the child shall die that is they will be put to death as they have had 100 years to receive the Lord. How do we know that some reject, we see Revelation 20:
7 And when the thousand years are expired, Satan shall be loosed out of his prison,
8 And shall go out to deceive the nations which are in the four quarters of the earth, Gog, and Magog, to gather them together to battle: the number of whom is as the sand of the sea.
Satan musters a large army as many as the sands of the sea who come against Christ and the Saints. They will all be under 100 years old and will have refused to believe on the savior.
I was taught that this passage is showing those born in the Millennial. Those who trust Christ and then fall into sin are seen as being accursed at 100 years old, but still living in the Millennial. While the ones who reject Christ during that time will be given 100 years to trust Christ and if they haven't then the child shall die that is they will be put to death as they have had 100 years to receive the Lord. How do we know that some reject, we see Revelation 20:
7 And when the thousand years are expired, Satan shall be loosed out of his prison,
8 And shall go out to deceive the nations which are in the four quarters of the earth, Gog, and Magog, to gather them together to battle: the number of whom is as the sand of the sea.
Satan musters a large army as many as the sands of the sea who come against Christ and the Saints. They will all be under 100 years old and will have refused to believe on the savior.