The Holy Spirit is a gentleman. The Spirit does not force himself but comes only at an invitation. This is just like salvation. Both Passover and Pentecost come is response to our invitation. We must ask.
Luke 11:9, 10, 13
And so I tell you, keep on asking, and you will receive what you ask for. Keep on seeking, and you will find. Keep on knocking, and the door will be opened to you. 10 For everyone who asks, receives. Everyone who seeks, finds. And to everyone who knocks, the door will be opened. So if you sinful people know how to give good gifts, how much more will your heavenly Father give the Holy Spirit to those who ask him. (nlt)