I dont' get why Paul said there are no distinctions in the body of Christ, but you immediately call for distinctions. I looked it up, and Paul apparently wrote using Paul because he was going to the Gentiles (Paul being his Gentile name/latinized). God had him write as Paul to make the distinction you refuse to accept.
Of course there are distinctions in the body of Christ. Here is one example laid out by the apostle Saul:
28 And God hath set some in the church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, helps, governments, diversities of tongues. 1 Corinthians 12:28.
After naming the various offices in the body of Christ, Saul identifies the distinctions by asking in the negative:
29 Are all apostles? are all prophets? are all teachers? are all workers of miracles?
30 Have all the gifts of healing? do all speak with tongues? do all interpret? 1 Corinthians 12:29–30.
Here we have various offices in the body of Christ but we do not all have the same gifts in which to accomplish these offices:
4 Now there are
diversities of gifts, but the same Spirit.
5 And there are
differences of administrations, but the same Lord.
6 And there are
diversities of operations, but it is the same God which worketh all in all. 1 Corinthians 12:4–6.
Here, we see the Trinity of God involved in each distinct identification of a believer in Christ (Spirit, Lord, God.)
It is the Holy Spirit that provides the gifts, the Son (Lord) who as Head of the Church directs each gifts administration, and God [the Father] who directs its overall operations of each administered gift by the Spirit directed by the Son [Lord.]
In other words, Saul is saying that everyone in the body of Christ might be in service to the One God, it is each gift of the Spirit that is administered by the Son in service to the One God. By making these distinctions known to the body of Christ we learn that each believer is not the same, that there are no "cookie-cutter" Christians. Saul further makes these distinctions understood by identifying that it is the "same God which worketh all in all" (verse 6.)
Another distinction in the body of Christ separates the hierarchy of authority.
The spiritual order:
There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in
Christ Jesus. Galatians 3:28.
By naming "Christ" before the human name of "Jesus" Saul is addressing the spiritual order of authority in the body of Christ ("Christ" English for the Greek "Christos" transliterated from the Hebrew "Messias" which means "Anointed.") In other words the hierarchy of authority in spiritual matters is Christ--->then, everyone else in the body of Christ.
The natural order:
3 But I would have you know, that the head of every man is Christ; and the head of the woman is the man; and the head of Christ is God. 1 Corinthians 11:2–3.
The hierarchy of authority in the natural order is God--->Christ---> man--->woman.
God is a God of order and God rules both realms - spiritual and natural - but there are distinctions of authority in each realm so that God's people operate within that established order so that there be no confusion for confusion is not of God.
His disciples are the foundation of the church. This was passed on to the church, by which we remember what Christ has done. If you really want to see how things went, look at the early history of the church. It really is quite something.
The foundation is Christ, NOT the disciples:
11 For other foundation can no man lay than that is laid, which is Jesus Christ. 1 Corinthians 3:11.
John 1:29: "29 The next day he *saw Jesus coming to him, and *said, “Behold, the Lamb of God who takes away the sin of the world!" Jesus died for all men... without distinction. He did not die for all men without exception. Who you are, what you have done, etc. does not matter. No distinction. Faith is all. Consider this verse in Galatians 4:
" 29 But as at that time the son who was born according to the flesh [a descendant of Abraham] persecuted the one who was born according to the Spirit [descendant of Abraham through Isaac], so it is even now.
So it is even now, here, everywhere. Jesus death is for all without distinction. That does not mean all without exception. It means it doesn't matter who you are, what you have done, what you look like, etc. If God chose you before the foundation of the world, before covenants were even a gleam in His eye or a thought on His mind, you are His, and Jesus came to die for you. Israel had first dibs.
The covenant is made by God and it is made with a man called "Abram the Hebrew" (Genesis 14:13.)
By identifying Abram as a Hebrew we can now track the covenant and its scope (who it covers.)
In this covenant God is identifying which Abram is being addressed out of the more than millions of people alive at the time. By identifying Abram's family line ["the Hebrew"/of Eber) God makes distinction between Abram the Hebrew as opposed to others who may also be named "Abram."
The narration continues through the five books authored by Moses who recorded the history of this one family of Abram, and the covenant that is passed on to the son, Isaac, and later, Jacob, with each son dying without God fulfilling said covenant. Thus, the covenant God made with Abram the Hebrew is passed to the next generation through his biological seed:
21 But my covenant will I establish
with Isaac, which Sarah shall bear unto thee at this set time in the next year.
Genesis 17:20–21.
They rejected as a nation. It went out to the Gentiles, who, considering how it worked with Israel, accepted. Those who had no law, but of which some were a law unto themselves. No longer unclean, as God showed Peter in a vision. Understand, what Peter said about being around people from another nation was a made up rabbanical thing. There were foreigners and strangers all over Israel who more than fit that law, who did business and even lived with and among the Israelites. (That is within their nation.) Some proselytized, but not all.
God declared that everyone shall bear the burden and punishment of
their own sin:
30 But every one shall die for his own iniquity: Jeremiah 31:30.
Scripture declares that EVERYONE rejected Jesus at His time of need, everyone except God the Father:
11 He came unto his own, and his own received him not. John 1:11.
But thankfully we are taught that salvation is OF THE LORD and that while EVERYONE rejected Christ, Christ died for the ungodly, that the salvation in Christ is given to "HIS PEOPLE" (the Jews.)
21 And she shall bring forth a son, and thou shalt call his name JESUS: for he shall save his people from their sins.
Matthew 1:21.
"His people" are identified as the Hebrew people as a whole. Non-Hebrew Gentiles are NOT "His people" for Christ was prophesied as coming (being born) from among the Hebrew people to and for the Hebrew people (Deut. 18:15, 18.)
Your error is that the Scripture has God as the center and the Jews who through covenant are related to God and the Bible records that relationship through the centuries and through the "books" of the Bible, but you take everything God promised the Jews and apply it universally, which is not true. That teaching is called "Universalism" and it is not taught in the Bible. God made covenant with ONE people through Abram and the Scripture records the history of not only that one people and their descendants but records their relationship with the God who gave them the covenant they now 'enjoy.'
Consider Abraham's slaves, who were not Hebrews at the time of the covenant. They became a part of the covenant through circumcision. Everyone in his household was to be circumcised. Consider Melchizedek who was not a Hebrew, but was both a king and a High Priest of the Most High God. Who was he?
The text identifies the covenant God was making with Abram was to and for Abram and his biological seed.
7 And I will establish my covenant between me and thee
and thy seed after thee in their generations for an everlasting covenant, to be a God unto thee, and to thy seed after thee. Genesis 17:7.
I do, however, I question you. Jesus spoke to a "Gentile" who was a Gentile. He did as she asked. Why? She got the gospel in a nutshell and believed it. Even the dogs eat crumbs that fall from the masters table. Jesus wasn't insulted by her saying that the dogs also get the crumbs of salvation. He said her faith was great to believe such a thing, and state it.
The "Gentiles" in the NT are identified as mixed heritage Hebrews (Hellenized Jews.) These are the Jews who did not return with Hezekiah and Ezra but remained in the Gentile lands where God scattered them. This number is in the millions through 29-35 generations of Jews that grew up in Gentile lands heavily influenced and assimilated into Greek culture having lost their own heritage as Jews.
Salvation as first to the Jew. Afterwards it went to the Gentiles, due to the rejection of Israel of Christ. And, Paul preached earnestly to the Gentiles hoping to stir up jealousy within his own people, that they too would be saved. (The jealousy was that God was Israel's God, yet now God was going out to the Gentiles and not to Israel. Instant jealousy, or not.) It was to the point that there were Gentiles out there who hated (I think that term applies here) Jews, and would openly brag. Paul did not have kind words for them. In fact, he said that God would cut them out, and put those Jews in their place. A total lack of humility, of which Paul wrote extensively to one church.
The New Covenant is between God and the House of Israel and the House of Judah. The New Covenant prophesied by Jeremiah shows that there are no requirements in this covenant of the Jews and instead shows God as the one who arbitrarily "forgives the Jews" (in covenant) and remembers their sin no more.
34 And they shall teach no more every man his neighbour, and every man his brother, saying,
Know the LORD:
For they shall all know me,
From the least of them unto the greatest of them, saith the LORD:
For
I will forgive their iniquity,
And
I will remember their sin no more.
Jeremiah 31:34.
God required nothing from the Jews of both houses as conditions for being forgiven. It simply states "[God] will remember their sin no more." This is their atonement and the mechanism that brought about their salvation is through the Mosaic Covenant sacrifices commanded by God.
Salvation is for all mankind without distinction. It is not for all mankind without exception. (Universalism is a heresy.) The church is made up of every tribe and nation whom God chose to save for Himself. Here is another place where Jesus tries to explain this to the Jews:
Matthew 22:
" Jesus spoke to them again in parables, saying, 2 “The kingdom of heaven [a]is like a king who [c]held a wedding feast for his son. 3 And he sent his slaves to call those who had been invited to the wedding feast, and they were unwilling to come. 4 Again he sent other slaves, saying, ‘Tell those who have been invited, “Behold, I have prepared my dinner; my oxen and my fattened cattle are all butchered and everything is ready. Come to the wedding feast!”’ 5 But they paid no attention and went their separate ways, one to his own [d]farm, another to his business, 6 and the rest seized his slaves and treated them abusively, and then killed them. 7 Now the king was angry, and he sent his armies and destroyed those murderers and set their city on fire. 8 Then he *said to his slaves, ‘The wedding feast is ready, but those who were invited were not worthy. 9 So go to the main roads, and invite whomever you find there to the wedding feast.’ 10 Those slaves went out into the streets and gathered together all whom they found, both bad and good; and the wedding hall was filled with [e]dinner guests.
11 “But when the king came in to look over the [f]dinner guests, he saw a man there who was not dressed in wedding clothes, 12 and he *said to him, ‘Friend, how did you get in here without wedding clothes?’ And the man was speechless. 13 Then the king said to the servants, ‘Tie his hands and feet, and throw him into the outer darkness; there will be weeping and gnashing of teeth in that place.’ 14 For many are [g]called, but few are chosen.”
Who were the one's originally invited into God's kingdom and to the wedding? Covenant Israel. Am I saying Israel is shut out? No. However they are who believe their place is in the covenant. Those who believe their place is in who they are. Both Jesus and Paul attacked those notions, as did others. Faith is what matters. It matters so much that when a Gentile woman, who Jesus wouldn't even speak to because He was sent to the lost sheep of the house of Israel, spoke out in faith, Jesus was visibly moved. I'm not sure He would have done the same if she just spit out memorized 10 commandments.
Then what you believe in is called "Universalism" and this is not taught in Scripture.
The Abrahamic Covenant was made by God and included Abram the Hebrew and Abram's Hebrew seed.
The Mosaic Covenant was made by God and includes God and the children of Israel.
The New Covenant is made by God and includes God and the House of Israel (ten northern kingdom tribes), and the House of Judah (two southern kingdom tribes.)
God saves through covenant and God's covenants are with the Hebrew people through Abraham and his biological Hebrew seed.
God made no other covenant than the ones He made with Abram and his descendants, whom Scripture identifies as the children of Jacob (Israel.)
God made no covenant with non-Hebrew Gentiles. None.
And there is NONE recorded (in Scripture.)