Titus 3:4 "But after that the kindness and love of God our Saviour toward man appeared, Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost; Which he shed on us abundantly through Jesus Christ our Saviour; That being justified by his grace, we should be made heirs according to the hope of eternal life"
Paul tells Titus the Holy Spirit is given to believers by Jesus Christ, not the church. There is no intermediary, Apostle, Bishop or church, just like He promised in the Gospel of John. Now you can read into it anything you want but the plain words are the Holy Spirit is given to believers by Jesus.
First, the "washing of regeneration" is baptism. Second, this is Apostle Paul talking to Bishop Titus about proper instruction of the laity (verses 1-3). What Paul is saying is, -- we were originally sinners just like the laity is today, but we were washed by the Holy Ghost ans so shall they.
Besides, is not necessary to repeat that the gift has an intermediary in the Church every time it is mentioned. The gift of the Holy Ghost is linked to baptism in enough verses for us to say that that is the ordinary way to receive it.