Or were they saved (believers) and thus the Body of Christ (1 Corinthians 12-13) was in some nebulous form - formed, but yet not formed. ???? Wouldn’t make sense...
The Body of Christ is comprised of all believers Yahweh has taken to Himself over all of the history of mankind. Thus, Abraham will be there, Moses, David, etc. and none of them were gifted with the ability to speak in foreign tongues. That particular gift served the purpose of shocking the public audience, but has no intrinsic value in itself.
But, as expected, you are getting those time-travel Catholics claiming the Apostles were themselves “Catholics”. Such nonsense is beyond absurd, but typical of that anthropocentric religious cult. The Apostles were believing Jews who recognized Jesus of Nazareth as the Messiah of Israel. Rome was (and still is) stuck in paganism.
from John 20
Jesus Appears to His Disciples
19 On the evening of that first day of the week, when the disciples were together, with the doors locked for fear of the Jewish leaders, Jesus came and stood among them and said, “Peace be with you!” 20 After he said this, he showed them his hands and side. The disciples were overjoyed when they saw the Lord.
21 Again Jesus said, “Peace be with you! As the Father has sent me, I am sending you.” 22 And with that he breathed on them and said, “Receive the Holy Spirit. 23 If you forgive anyone’s sins, their sins are forgiven; if you do not forgive them, they are not forgiven.”
It seems Jesus had already given them the Holy Spirit, so I think it is clear the disciples were believers, and Pentecost was a separate/secondary event.
The Old Testament describes many, many, many believers prior to the Incarnation (the First Coming).
After the Cross, we have a new mystery revealed, namely, the Bride of Christ, the Church. A body of believers indwelt by God the Holy Spirit who form that Bride of Christ.
Old Testament believers were not so indwelt by God the Holy Spirit, but some were imbued with the Spirit.
In the Church Age, believers, both Hebrew and Gentile, are grafted into the tree.
After the Church Age, Hebrew believers will be indwelt by God the Holy Spirit, in the Millennium.
Between the 2, after the Rapture, and the Great Apostasy, the Restrainer will be removed out from the believers, but there still will remain believers.
After the Church Age