I would disagree because that still only involved Jews. They considered believing in Jesus to be "The Way" and still followed temple worship.
I think the stoning of Stephen is the final rejection and the Christian Church started with Paul.
Sorry, I don’t get your reference.
Jesus said (Luke 24:48-49) “You are witnesses of these things. And behold I am sending forth the promise of My Father upon you but you are to STAY IN THE CITY UNTIL YOU ARE CLOTHED WITH POWER FROM ON HIGH.” (caps mine)
The “Power from on high” was the Holy Spirit, which came on the Church on Pentecost.
That “Power” changed Peter from an illiterate fisherman to one of the most articulate speakers in history...
that “Power” began the Church.
Israel, as a Nation rejected Christ at His first coming. Not all of Israel, Christ had His Little Flock of believers, but the Nation of Israel as a whole. Strike 1.
The Nation of Israel rejected Christ and His offer to return and set up the Kingdom, on the day of Pentecost. Strike 2.
In Acts, Chapter 8, the Nation of Israel rejects Stephen's Message and he is stoned to death. Strike 3. Stephen replies to the wailing and gnashing Jews, "..And said, Behold, I see the heavens opened, and the Son of man standing on the right hand of God." Acts. 8:56.
This is important, because Christ WAS seated on the right hand of God. And Stephen saw Him STANDING. This was a sign of judgement. Strike 3.
With the very next Chapter, 9, Paul is saved and the Dispensation of the Grace of God begins. Israel is blinded, set aside, and the Gospel of the Grace of God goes to the Gentiles.
The believers at Pentecost never thought of themselves as anything but Jews who had received the King of Israel, Jesus Christ, and His salvation, and were waiting for His return to the earth to establish the long-promised Davidic, Messianic Kingdom (Acts 3:19-21).
Peter's preaching in Acts chapters 2 to 7, were entirely addressed to Israel and its leaders. He was not knowingly preaching to the Body of Christ, of which at that time he was totally unaware. Peter, nor the Eleven were anticipating a New Testament Church, the likes of ANYTHING that developed after Acts chapter 15.
Peter, nor the Eleven, had any idea that there would be a prolonged "Church Age." They were looking for the establishment of that which had been promised by the Old Testament prophets -- the Dividic Kingdom -- with Christ returning as its King.
We get in a mess when we try to read what we see of the Church today back in to the early chapters of the Acts of the Apostles, or in to the Book of Acts anywhere for that matter, and try to establish our doctrine there.