Semantics, abandoning their original faith means exactly what I said that a pagan, atheists ,protestants or Jew will not be allowed in the Millennial Kingdom.
how long has it been since you read Matthew 22:1-14 ?
or Matthew 20:16 ?
allowed in, yes. allowed to stay is a different matter.
the bible clearly talks of wedding clothes--meaning those who are clothed with Christ--will be allowed to stay.
the servants in Matthew 22 are those who serve us here on earth, our pastors,teachers, fathers, who tell us of Christ, baptize us, unite us with Christ, and who bring us into the fullness of the faith.
They are the ones who go out into the highways and byways, bringing in all who will come.
but also just as clearly, all those who willingly come are not all clothed with Christ, and have not truly put on the garment of salvation that was offered to them.
that clothing is not apparent to our eyes here on earth, but it will be crystal clear to God.
in Matthew 20:16, the first called are the Jews. all throughout the OT and up to the days of Jesus life here on earth they have been called. and in the last days they will be called again , but this time by prophets that they themselves recognize.
and the last called are the Christians.
this scripture clearly states that both the first and the last will be together in heaven.
the order listed in this verse is not according to their importance in the kingdom of God, but the order of their comming to the kingdom. and they will come!