The quote from insight vol 2 pg 1125 didn't copy correctly in my post above, it is -
Tribes
“JudgingtheTwelveTribesofIsrael.” Jesus told the apostles that in “the re-creation” they would “sit upon twelve thrones, judging the twelve tribes of Israel.” (Mt 19:28; see CREATION [Re-Creation].) And he expressed a similar thought when he made a covenant with his faithful apostles for a Kingdom. (Lu 22:28-30) It is not reasonable that Jesus meant that they would judge the 12 tribes of spiritual Israel later mentioned in Revelation, for the apostles were to be part of that group. (Eph 2:19-22; Re 3:21) Those “called to be holy ones” are said to judge, not themselves, but “the world.” (1Co 1:1, 2; 6:2) Those reigning with Christ form a kingdom of priests. (1Pe 2:9; Re 5:10) Consequently, “the twelve tribes of Israel” mentioned at Matthew 19:28 and Luke 22:30 evidently represent “the world” of mankind who are outside that royal priestly class and whom those sitting on heavenly thrones will judge.—Re 20:4.
They have said 'it is not reasonable that Jesus meant that they would judge the 12 tribes of spiritual Israel'. Those that Jesus was talking to knew what he meant. They knew he wasn't talking about the earthly men of Israel therefore he must have been talking about the spiritual kingdom of Israel. But because the symbolic book of Revelation uses the word spiritual they conclude that it is a different Israel that he is talking about. On this basis then everything in Revelation does not relate to anything in the other scriptures and can be made to fit any definition they want.
A good point has been raised to ask a Jew to defind their understanding of 'new covenant' and I am really curious to know how a JW would define it. As previously mentioned I don't think the literature actually spells it out clearly enough and I think there would be many and varied answers. Just to confuse them more the org mentions the new covenant and an additional covenant (which becomes very conveniant for them when you think you are discussing one thing with them and they are actually discussing something else).
Question: "What is the New Covenant?"
Answer: The new covenant is spoken about first in the book of Jeremiah. The old covenant that God had established with His people required obedience to the Old Testament Mosaic law. Because the wages of sin is death (Romans 6:23), the law required that people perform rituals and sacrifices in order to please God and remain in His grace. The prophet Jeremiah predicted that there would be a time when God would make a new covenant with the nation of Israel.
"'The day will come,' says the Lord, 'when I will make a new covenant with the people of Israel and Judah. . . . But this is the new covenant I will make with the people of Israel on that day,' says the Lord. 'I will put my law in their minds, and I will write them on their hearts. I will be their God, and they will be my people'" (Jeremiah 31:31, 33). Jesus Christ came to fulfill the law of Moses (Matthew 5:17) and create a new covenant between God and His people. The old covenant was written in stone, but the new covenant is written on our hearts, made possible only by faith in Christ, who shed His own blood to atone for the sins of the world. Luke 22:20 says, "After supper, [Jesus] took another cup of wine and said, 'This wine is the token of God's new covenant to save you – an agreement sealed with the blood I will pour out for you.'"
Now that we are under the new covenant, we are not under the penalty of the law. We are now given the opportunity to receive salvation as a free gift (Ephesians 2:8-9). Through the life-giving Holy Spirit who lives in all believers (Romans 8:9-11), we can now share in the inheritance of Christ and enjoy a permanent, unbroken relationship with God. Hebrews 9:15 declares, “For this reason Christ is the mediator of a new covenant, that those who are called may receive the promised eternal inheritance—now that He has died as a ransom to set them free from the sins committed under the first covenant.”
Question: "What is the New Covenant?"
Answer: The new covenant is spoken about first in the book of Jeremiah. The old covenant that God had established with His people required obedience to the Old Testament Mosaic law. Because the wages of sin is death (Romans 6:23), the law required that people perform rituals and sacrifices in order to please God and remain in His grace. The prophet Jeremiah predicted that there would be a time when God would make a new covenant with the nation of Israel.
"'The day will come,' says the Lord, 'when I will make a new covenant with the people of Israel and Judah. . . . But this is the new covenant I will make with the people of Israel on that day,' says the Lord. 'I will put my law in their minds, and I will write them on their hearts. I will be their God, and they will be my people'" (Jeremiah 31:31, 33). Jesus Christ came to fulfill the law of Moses (Matthew 5:17) and create a new covenant between God and His people. The old covenant was written in stone, but the new covenant is written on our hearts, made possible only by faith in Christ, who shed His own blood to atone for the sins of the world. Luke 22:20 says, "After supper, [Jesus] took another cup of wine and said, 'This wine is the token of God's new covenant to save you – an agreement sealed with the blood I will pour out for you.'"
Now that we are under the new covenant, we are not under the penalty of the law. We are now given the opportunity to receive salvation as a free gift (Ephesians 2:8-9). Through the life-giving Holy Spirit who lives in all believers (Romans 8:9-11), we can now share in the inheritance of Christ and enjoy a permanent, unbroken relationship with God. Hebrews 9:15 declares, “For this reason Christ is the mediator of a new covenant, that those who are called may receive the promised eternal inheritance—now that He has died as a ransom to set them free from the sins committed under the first covenant.”
This is a definition on the New Covenant that I found that makes it plain and clear
Question: "What is the New Covenant?"
Answer: The new covenant is spoken about first in the book of Jeremiah. The old covenant that God had established with His people required obedience to the Old Testament Mosaic law. Because the wages of sin is death (Romans 6:23), the law required that people perform rituals and sacrifices in order to please God and remain in His grace. The prophet Jeremiah predicted that there would be a time when God would make a new covenant with the nation of Israel.
"'The day will come,' says the Lord, 'when I will make a new covenant with the people of Israel and Judah. . . . But this is the new covenant I will make with the people of Israel on that day,' says the Lord. 'I will put my law in their minds, and I will write them on their hearts. I will be their God, and they will be my people'" (Jeremiah 31:31, 33). Jesus Christ came to fulfill the law of Moses (Matthew 5:17) and create a new covenant between God and His people. The old covenant was written in stone, but the new covenant is written on our hearts, made possible only by faith in Christ, who shed His own blood to atone for the sins of the world. Luke 22:20 says, "After supper, [Jesus] took another cup of wine and said, 'This wine is the token of God's new covenant to save you – an agreement sealed with the blood I will pour out for you.'"
Now that we are under the new covenant, we are not under the penalty of the law. We are now given the opportunity to receive salvation as a free gift (Ephesians 2:8-9). Through the life-giving Holy Spirit who lives in all believers (Romans 8:9-11), we can now share in the inheritance of Christ and enjoy a permanent, unbroken relationship with God. Hebrews 9:15 declares, “For this reason Christ is the mediator of a new covenant, that those who are called may receive the promised eternal inheritance—now that He has died as a ransom to set them free from the sins committed under the first covenant.”
Recommended Resource: The Moody Handbook of Theology by Paul Enns.