Saint....Let me show you why what you are teaching, wont work..... perfectly..
First, if you read Acts 2, it says that "3000 were added TO the Church".
So, to be added TO, means it was already there to receive them.
IT like the idea of going to church., as you can't go to it unless it already exists.
So, if you try to teach that the Church began with the "infilling" or with "" Tongues""", or during the Pentecostal event, then that is a problem, because you are teaching that the event of the Holy Ghost being given is the START of the Church.
However, Jesus already gave the Holy Spirit to the 11 Apostles when He "breathed on them" and said "receive the Holy Spirit". John 20
So, thats the same exact Holy Spirit that "poured out" at Pentecost, later.
See it?
This means, if you are really doing the math, then the church began with the first person who was redeemed by Faith.
That would be Abraham, the "father of all them who Believe".
But, im just being really specific, and its not going to harm anyone if you teach them that the church began at (Acts 2) Pentecost.....tho that is not actually or technically correct.
The church was to begin in Acts 2, as first instructed by Jesus here...
Acts 1:
4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence....
8 But ye shall receive power, after that the Holy Ghost is come upon you....
Acts 2:
2 And when the day of Pentecost was fully come, they were all with one accord in one place.
2 And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
3 And there appeared unto them cloven tongues like as of fire, and it sat upon each of them.
4 And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance....
37 Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?
38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.
40 And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation.
41 Then they that gladly received his word were baptized: and the same day there were added unto them about three thousand souls.
It is really easy to get this.