One New Man

Outworking a new grasp of God's ongoing purposes through Israel is not unlike a pilot having to take off in whatever direction is available before setting the flight towards its destination.  But our direction is then the same, which is towards the bringing together of Jew and Gentile (Ephesians 2:11-22) as part of the final reconciling of "all things in heaven and earth" (Ephesians 1:10). Where there'll be complete harmony, whilst the uniqueness of Israel and the identity of every"tribe, tongue and nation"  will still be preserved (Revelation 7:9).

Our salvation is identical "whether Jew or Gentile, slave or free, male or female"  (Galatians 3:28)  but we still retain our different identities, just like men and women retain theirs when they're saved. Which is why as 'grafted in' Gentiles we must not try to get 'all Jewish'; because if we do it negates our end-time role and also produces another form of Replacement Theology.  Instead our challenge is to draw from the Jewish roots of our faith, while remaining as "wild branches"  (Romans 11:17).

"Through Him to reconcile all things to Himself whether things on earth or in heaven." (Colossians 1:20)

So we're to draw from the resources God gave Israel to be righteous (spiritually clean) and holy (separate) in order to be "a light to the nations"  (Isaiah 49:6), but without getting legalistic about it (Colossians 2:16).

Such as from the Sh'ma (the 'Hear O Israel') that sets the whole of life in the context of knowing God (Deuteronomy 6:4-6), and from the Hebraic love of His word which undergirds Israel's irrevocable gifting and calling, as well as from the cycle of the Jewish Feasts, especially the weekly Sabbath that honours God as Creator and Provider.  Just as if we're living abroad and engaging with the culture of our host country, while still retaining our national identity.

Meaning that, even though the 'One New Man' is a future vision, it's the goal we're aiming for as we  bear the fruit produced by our Jewish root.