Why is the Christian church so divided? Can it be repaired?

One Kingdom, One King. Eze.37:15-27

15 ¶ Again the word of the LORD came to me, saying,

16 “As for you, son of man, take a stick for yourself and write on it: ‘For Judah and for the children of Israel, his companions.’ Then take another stick and write on it, ‘For Joseph, the stick of Ephraim, and for all the house of Israel, his companions.’

17 “Then join them one to another for yourself into one stick, and they will become one in your hand.

18 ¶ “And when the children of your people speak to you, saying, ‘Will you not show us what you mean by these?’—

19 “say to them, ‘Thus says the Lord GOD: “Surely I will take the stick of Joseph, which is in the hand of Ephraim, and the tribes of Israel, his companions; and I will join them with it, with the stick of Judah, and make them one stick, and they will be one in My hand.” ’

20 “And the sticks on which you write will be in your hand before their eyes.

21 ¶ “Then say to them, ‘Thus says the Lord GOD: “Surely I will take the children of Israel from among the nations, wherever they have gone, and will gather them from every side and bring them into their own land;

22 “and I will make them one nation in the land, on the mountains of Israel; and one king shall be king over them all; they shall no longer be two nations, nor shall they ever be divided into two kingdoms again.

23 “They shall not defile themselves anymore with their idols, nor with their detestable things, nor with any of their transgressions; but I will deliver them from all their dwelling places in which they have sinned, and will cleanse them. Then they shall be My people, and I will be their God.

24 ¶ “David My servant shall be king over them, and they shall all have one shepherd; they shall also walk in My judgments and observe My statutes, and do them.

25 “Then they shall dwell in the land that I have given to Jacob My servant, where your fathers dwelt; and they shall dwell there, they, their children, and their children’s children, forever; and My servant David shall be their prince forever.

26 “Moreover I will make a covenant of peace with them, and it shall be an everlasting covenant with them; I will establish them and multiply them, and I will set My sanctuary in their midst forevermore.

27 “My tabernacle also shall be with them; indeed I will be their God, and they shall be My people.

28 “The nations also will know that I, the LORD, sanctify Israel, when My sanctuary is in their midst forevermore.” ’ ”

New Covenant w/ Israel - Jer 31:31-40

31 ¶ “Behold, the days are coming, says the LORD, when I will make a new covenant with the house of Israel and with the house of Judah—

32 “not according to the covenant that I made with their fathers in the day that I took them by the hand to lead them out of the land of Egypt, My covenant which they broke, though I was a husband to them, says the LORD.

33 “But this is the covenant that I will make with the house of Israel after those days, says the LORD: I will put My law in their minds, and write it on their hearts; and I will be their God, and they shall be My people.

34 “No more shall every man teach his neighbor, and every man his brother, saying, ‘Know the LORD,’ for they all shall know Me, from the least of them to the greatest of them, says the LORD. For I will forgive their iniquity, and their sin I will remember no more.”

35 Thus says the LORD,
Who gives the sun for a light by day,
The ordinances of the moon and the stars for a light by night,
Who disturbs the sea,
And its waves roar
(The LORD of hosts is His name):

36 “If those ordinances depart
From before Me, says the LORD,
Then the seed of Israel shall also cease
From being a nation before Me forever.”

37 ¶ Thus says the LORD:

“If heaven above can be measured,
And the foundations of the earth searched out beneath,
I will also cast off all the seed of Israel
For all that they have done, says the LORD.

38 ¶ “Behold, the days are coming, says the LORD, that the city shall be built for the LORD from the Tower of Hananel to the Corner Gate.

39 “The surveyor’s line shall again extend straight forward over the hill Gareb; then it shall turn toward Goath.

40 “And the whole valley of the dead bodies and of the ashes, and all the fields as far as the Brook Kidron, to the corner of the Horse Gate toward the east, shall be holy to the LORD. It shall not be plucked up or thrown down anymore forever.”