Pentecost (Acts 2) may be seen as a special day for the Jews. For it was 120 Jews who gathered for prayer in the upper room. It was Jews who were immersed in the Holy Spirit. It was Jews who accused them of being drunk. And it was Jews who received the Word and were immersed as a sign of their repentance and acceptance of Jesus as Lord and Saviour.
However, it was not long before Gentiles had a like experience (Acts 10). And even before this the Samaritans likewise experienced what it was to be submerged in the Holy Spirit (Acts 8). The evidence was so powerful that Simon wanted to buy the power to produce like results.
Of course it cannot be bought. But that same power, the evidence of which could be seen and heard, is still available to-day, whether you are Jew or Gentile, or like the Samaritans, not sure what you are.
The purpose was not just to produce power as we mostly think of it, but the power to produce ‘One new man’ (Eph 2:15; Gal 3:28).
The Holy Spirit is able to bring together diverse people which doctrine cannot. Nevertheless, one of the Holy Spirit’s functions is to lead us into Truth. Part of truth is ‘The Great Commission’ to ‘go and make disciples of all nations’ (Mat 28:19; Mk 16:15). Another aspect of Truth is ‘The Great Commandment’ ‘to love your brother as yourself.’ (Jn 13:34).
If you are tempted to say, “I can’t” Phil 2:13 tells us it is God who works in you both to will and to do for His good pleasure. And that is the work of the Holy Spirit.