Baptizo to dip repeatedly, to immerse, to submerge (of vessels sunk) to cleanse by dipping or submerging, to wash, to make clean with water, to wash one's self, bathe to overwhelm “Before the emergence of the holiness movement in the mid 19th century and Pentecostalism in the early 20th century, most denominations believed that Christians received the baptism with the Holy Spirit either upon conversion and regeneration or through rites of Christian initiation. Since the growth and spread of Pentecostal and charismatic churches, however, the belief that the baptism with the Holy Spirit is an experience distinct from regeneration has come into increasing prominence.” … From: http://en.wikipedia.org/wiki/Baptism_with_the_Holy_Spirit When the Holy Spirit comes UPON you, it’s like He envelopes, surrounds, overwhelms you. It’s like you are immersed in the Holy Spirit. Here are 2 passages describing it: “… you shall be baptized with the Holy Spirit not many days from now. … you shall receive (spiritual) power when the Holy Spirit has come upon you; and you shall be witnesses to Me … to the end of the earth.” (Acts 1:5,8) “… the Holy Spirit fell upon them (the Gentiles), as upon us (the Jews) at the beginning. Then I remember the word of the Lord, how He said, ‘John indeed baptized with water, but you shall be baptized with the Holy Spirit.’ … God gave them the same gift as He gave us when we believed on the Lord Jesus Christ” (Acts 11:15-17) This “gift” of Holy Spirit baptism is not salvation … it is a special anointing after salvation. The above is much different than when one is born-again at the moment of salvation … when the Holy Spirit ENTERS you and remains INSIDE you: “And I (Jesus) will pray (to) the Father, and He will give you another Helper, that He may abide with you forever -- the Spirit of truth … you know Him, for He dwells with you and will be in you.” (John 14:16-17) The Holy Spirit is INSIDE born-again Christians: John 14:17, Romans 8:11, 1 Corinthians 3:16, Galatians 4:6, 2 Timothy 1:14, 1 John 3:24, 1 John 4:12-16. .