The Church began at Pentecost when God the Holy Spirit indwelt believers through faith in Christ.
Secondly, until His Body is complete, Israel is represented by a remnant, but not to be confused with the present day nation of Israel.
There are many indications that many of Israel are being drawn back into the land, and that this first regathering is being performed in unbelief, whereas at the Second Coming, the regathering will occur in belief in Him.
The Apostles and the Priesthood ~ Part 3 [Catholic/Orthodox Caucus]
The Apostles and the Priesthood ~ Part 2 [Catholic/Orthodox Caucus]
The Apostles and the Priesthood ~ Part I [Catholic/Orthodox Caucus]
Wrong - the problem is that there is no biblical evidence exists to support the view that anyone at Pentecost recognized that the Church, i.e. the Body of Christ, had come into existence. On the contrary, the biblical evidence indicates that at Pentecost the Twelve knew nothing about the Body of Christ. The apostle Paul is the only biblical writer who reveals the Church as the Body of Christ. No other Bible writer mentions it.