Your replies are lengthy and contain much detail but fail to address the point I briefly make. Can you briefly respond to what I've said: "If the 144,000 literally represent God's chosen witnesses at the end of time physically preaching the Good News as Paul did in the first century, only their mission as the final call for man to turn to God through Christ, why does John write they are with Christ on heavenly mount Sion as first fruits redeemed from men before the throne of God? They shall not become the first fruits unto God and the Lamb! They ARE the first fruits unto God and the Lamb, having already been redeemed from among men!"
This statement implies the first fruits unto God and the Lamb are not spiritual Jews living during the end of days. Since they are already the spiritual body of Christ in heavenly Jerusalem, they are in the heavenly realm of God being made spiritually alive after physical death when the Spirit of Christ came to seal them with spiritual life. That's why John writes they are (not shall be) redeemed from the earth having the Father's name written in their foreheads. "These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb."