I notice that you did not address the objections. I also noticed that besides Ezekiel 37, you did not refer to scripture.
So, when did Ephraim repent? ...
And IF and WHEN an Israelite is converted, he CEASES TO BE AN ISRAELITE. 2nd Corinthians 5:75 says that (i) he becomes a new creature, (ii) the all old things (including his Israelitism) pass away, and (iii) the New Creature has no Jews in it (Gal.3:28; Col.3:11).
One For Israel - Messianic Judaism / Christianity is Jewish
When one converts to Christianity / Messianity / Messianic Judaism, one becomes an Israelite, as it is the true form of Judaism (incorporating the partial fulfilment to date, of the prophesies of the Judaic Messiah, to be fully fulfilled at the return of Christ / Messiah), practiced by Israelites.
Did all twelve of Jesus' / Yeshua's disciples cease to be Jewish Israelites, when they "converted" to Jesus Christ / Yeshua ha'Maschiach's Messianic Judaism commonly called Christianity / Messianity / Judaic Messianism?
In Christianity / Judaic Messianism, God's laws are written through the blood of Jesus / Yeshua on our hearts and minds. Those who have converted by blood or adoption to Christianity / Messianic Judaism all became Israelites, as they adopted one of the forms of Judaism, Christianity that follows God's laws written on their hearts and minds, is Messianic Judaism.
Ezekiel 36 (ESV)
19 I
scattered them among the nations, and they were dispersed through the countries. In accordance with their ways and their deeds I judged them.
22 "Therefore say to the
house of Israel, Thus says the Lord God: It is not for your sake, O house of Israel, that I am about to act, but for the sake of my holy name, which you have profaned among the nations to which you came.
24 I will take you from the nations and gather you from all the countries and bring you into your own land.
25 I will sprinkle clean water on you, and you shall be clean from all your uncleannesses, and from all your idols I will cleanse you.
26 And I will
give you a new heart, and a new spirit I will put within you ( Israel's renewed covenant written in the blood of Jesus Christ / Yeshua ha'Mashiach ). And I will remove the heart of stone from your flesh and give you a heart of flesh.
Jeremiah 31 (ESV)
31 "Behold, the days are coming, declares the Lord, when I will make
a new covenant with the house of Israel ( scattered
Ephraim among the
Gentiles ) and the house of
Judah ( those
Jews returned or those not yet, from Babylonian captivity and Roman diaspora ),
32 not like the covenant that I made with their fathers on the day when I took them by the hand to bring them out of the land of Egypt, my covenant that they broke, though I was their husband, declares the Lord.
33 For this is the covenant that I will make with the house of Israel after those days, declares the Lord: I will put my
law within them, and I will write it
on their hearts ( Israel's renewed covenant written in the blood of Jesus Christ / Yeshua ha'Mashiach ). And I will be their God, and they shall be my people.
Hebrews 8 (ESV)
8 For he finds fault with them when he says: "Behold, the days are coming, declares the Lord, when I will establish a
new covenant ( Israel's renewed covenant written in the blood of Jesus Christ / Yeshua ha'Mashiach ) with the
house of Israel ( scattered
Ephraim among the
Gentiles ) and with the house of Judah ( those
Jews returned or those not yet, from Babylonian captivity and Roman diaspora ),
9 not like the covenant that I made with their fathers on the day when I took them by the hand to bring them out of the land of Egypt. For they did not continue in my covenant, and so I showed no concern for them, declares the Lord.
10 For this is the covenant that I will make with the house of Israel after those days, declares the Lord: I will put my
laws into their minds, and write them
on their hearts, and I will be their God, and they shall be my people.
11 And they shall not teach, each one his neighbor and each one his brother, saying, 'Know the Lord,' for they shall all know me, from the least of them to the greatest.
12 For I will be merciful toward their iniquities, and I will remember their sins no more."
John 11 (ESV)
49 But one of them, Caiaphas, who was high priest that year, said to them, "You know nothing at all.
50 Nor do you understand that it is better for you that one man should die for the people, not that the whole nation should perish."
51 He did not say this of his own accord, but being high priest that year he prophesied that Jesus would die for the nation,
52 and not for the nation only, but also to gather into one
( Israel's renewed covenant written in the blood of Jesus Christ / Yeshua ha'Mashiach ) the children of God who are scattered abroad (
Jews /
Judah, and
Gentiles /
Ephraim.
53 So from that day on they made plans to put him to death.
54 Jesus therefore no longer walked openly among the
Jews (
Judah ), but went from there to the region near the wilderness, to a town called
Ephraim (
Gentiles ), and there he stayed with the disciples.
Acts 2 (ESV)
11 both
Jews ( from remnant
Judah ) and proselytes ( scattered
Ephraimites among the
Gentiles ), Cretans and Arabians—we hear them telling in our own tongues the mighty works of God."
Those
Israelites (
Jews /
Judah and
Ephraimites /
Gentiles ) of verse 11 is addressed collectively as
men of Israel in verse 22:
22 "Men of Israel, hear these words: Jesus of Nazareth, a man attested to you by God with mighty works and wonders and signs that God did through him in your midst, as you yourselves know—
23 this Jesus, delivered up according to the definite plan and foreknowledge of God
( in Israel's renewed covenant written in the blood of Jesus Christ / Yeshua ha'Mashiach Son of David son of Judah ), you crucified and killed by the hands of lawless men.