Baptism of the Holy Ghost for Christian Believers

They that believe shall receive a river.
John 7:37-39 → In the last day, that great day of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink. 
He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water. 
(But this spake he of the Spirit, which they that believe on him should receive: for the Holy Ghost was not yet given; because that Jesus was not yet glorified.)

He told the disciples to go and wait for the Holy Spirit to be poured out.
Luke 24:49 → And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.

This is what the Holy Ghost baptism looks like. Tongues of fire.
Acts 2:1-4 → And when the day of Pentecost was fully come, they were all with one accord in one place.
And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
And there appeared unto them cloven tongues like as of fire, and it sat upon each of them.
And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.

The baptism in the Holy Ghost is a gift for all who believe.
Acts 2:38-39 → Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.

The baptism in the Holy Ghost is the power of God in the life of the believer.
Acts 1:8 → But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.

The apostles laid hands on the new believers and they received the Holy Ghost.
Acts 8:14-17 → Now when the apostles which were at Jerusalem heard that Samaria had received the word of God, they sent unto them Peter and John:
Who, when they were come down, prayed for them, that they might receive the Holy Ghost: (For as yet he was fallen upon none of them: only they were baptized in the name of the Lord Jesus.) Then laid they their hands on them, and they received the Holy Ghost.