God showed Peter that the HE had chose the Gentiles worthy of salvation, this is the purpose of this vision:
Acts 10:11: And saw heaven opened, and a certain vessel descending unto him, as it had been a great sheet knit at the four corners, and let down to the earth:
Acts 10:12: Wherein were all manner of fourfooted beasts of the earth, and wild beasts, and creeping things, and fowls of the air.
Acts 10:13: And there came a voice to him, Rise, Peter; kill, and eat.
Acts 10:14: But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean.
Acts 10:15: And the voice spake unto him again the second time, What God hath cleansed, that call not thou common.
This was God setting the stage of the coming events in which the Gentiles would receive the baptism of HS showing Peter God chose them worthy of salvation:
verse 37-43 Peter preaches the gospel to the Gentiles and look what happened:
Acts 10:44: ¶While Peter yet spake these words, the Holy Ghost fell on all them which heard the word.
Acts 10:45: And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost.
Acts 10:46: For they heard them speak with tongues, and magnify God. Then answered Peter,
Acts 10:47: Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we?
Acts 10:48: And he commanded them to be baptized in the name of the Lord. Then prayed they him to tarry certain days.
They were astonished because the Holy Spirit fell on Gentiles, without the laying on of hands in Acts 8. This showed God chose the gentiles worthy of salvtion. Peter said "revcieved the Holy Spirit AS WELL AS We.
Not like the Samaritan by the laying of hands in Acts 8, not like those in Acts 19 by the laying of hands by Paul, BUT JUST LIKE THE APOSTLES DID ON PENTECOST AS CHRIST PROMISED THEM. HE FELL ON THEM, NO LAYING ON OF HANDS
THIS IS THE BAPTISM OF THE HOLY SPIRIT, PETER TELLS US THIS IN THE SAME CONTEXT:
As Peter recounts what happened to the Gentiles to the other Jews that were not there in chapter 11:1-14, Notice what he says this was:
Acts 11:13: And he shewed us how he had seen an angel in his house, which stood and said unto him, Send men to Joppa, and call for Simon, whose surname is Peter;
Acts 11:14: Who shall tell thee words, whereby thou and all thy house shall be saved.
Acts 11:15: And as I began to speak, the Holy Ghost fell on them, as on us at the beginning.
Acts 11:16: Then remembered I the word of the Lord, how that he said, John indeed baptized with water; but ye shall be baptized with the Holy Ghost.
Showing what this is, it is the baptism of the HS. It is not the same as the laying on of hands, nor the same as water baptism, It does not happen to us when we believe, it is not promised to us. Just as it did not happen to the Samaritans in Acts 8. It is only for the Apostles in Acts 2, and the Gentiles in Acts 10, not every believer is promised this. Read Jn 14, 16 and Acts 1, and 2, the promise was only to the Apostles.
Paul said at the time he wrote EPh, there is only one baptism 4:4-5. Which is it? The baptism of the HS which pupropse has been fulfilled, or is the baptism in the name of the Lord Jesus that the Lord commanded all nations to be baptized with(Matt 28:18-f.)? The same that the Jews in Acts 2, the Samaritans in Acts 8, and those under Johns baptism in Acts 19 were baptized into? Gal 3:27, Rom 6:3 cannot be the baptism of HS because it has no purpose for them, it was not promised to every believer.
IF it still falls on every believer, then why not those of Acts 8, and 19? Water baptism is the the baptism in the name of the Jesus, it is not a work of man, and who you says that is blaspheming the HS because he commanded it.