You have just described, with Scripture the One true Church: The Kingdom Church. Where Israel will be a Nation of priests and a blessing to all Nations. Made up of the Little Flock of Believers during Christ's earthly ministry and soon to become God's center of attention again, during the Tribulation. When He will be dealing with nations again, not individuals, and the Nation of Israel in particular. Just like He did during His earthly ministry.
what you have not described, with Scripture, is the One body, one Spirit, one hope of your calling, one Lord, one faith, one baptism, one God and Father of all, who is above all, and through all, and in you all": The CHURCH THE BODY OF CHRIST for this age of grace. Eph. 4:4-6.
You have described "Time Past" and the "Ages to Come" beautifully. You have left out "But NOW". Which is where you actually are. And cannot seem to grasp.
Good grief, what a convoluted idea of the Gospel those guys came up with in the 19th Century. Gibberish.
Follow those teachers if you wish, but I'll stick with that old time religion: the Church proclaiming Christ.