Bede : And the believers from among the circumcised who had come with Peter were amazed, because the gift of the Holy Spirit was poured out even on the Gentiles. For they were hearing them speaking in tongues, etc. This is similar to that statement by the same apostle Peter, when he was giving an account to the Jews why he had committed the sacraments of baptism to the circumcised. So then, he said, if God gave them the same gift as He gave to us, etc. There are many other testimonies of the Scriptures that consistently attest that the Holy Spirit is the gift of God, insofar as it is given to those who love God through Him. Therefore, it is the gift of God insofar as it is given to those to whom it is given; but it is God Himself, even if it is given to no one, because God was coeternal with the Father and the Son before it was given to anyone; nor because they give, is it given, hence it is not lesser than them. For thus it is given, as a gift of God, so that He gives Himself as God. For the Spirit blows where He wills (John III). — Retractions on Acts