The baptism of the Holy Spirit was spoken of by John the Baptist in Luke 3:16: “I baptize you with water. But one who is more powerful than I will come, the straps of whose sandals I am not worthy to untie. He will baptize you with the Holy Spirit and with fire.” Jesus, before his ascension, gave this promise, “John baptized with water, but in a few days you will be baptized with the Holy Spirit” (Acts 1:5). This baptism came true at Pentecost, when the Holy Spirit descended on the disciples.
Acts 2:4 All of them were filled with the Holy Spirit and began to speak in other tongues as the Spirit enabled them. The baptism of the Holy Spirit is considered a separate experience from both conversion and water baptism. To illustrate, if we drank water from a glass, then the water would be inside us. However, if we went to the beach and stepped into the ocean, then we would be in the water. The Holy Spirit comes inside of us when we are saved, but when we are baptized in the Spirit, the Holy Spirit come upon us and completely surrounds us. While the indwelling of the Holy Spirit reproduces the life of Jesus, the outpouring or baptism of the Holy Spirit, reproduces the ministry of Jesus. Acts 1:8 But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth. The baptism in the Holy Spirit is an experience in which the Christian receives the Spirit’s power in a new way, enabling them to live an empowered life. The baptism in the Holy Spirit is a free gift available to all who believe in Christ. Acts 10:44 "While Peter was still speaking these words, the Holy Spirit came on all who heard the message.45 The circumcised believers who had come with Peter were astonished that the gift of the Holy Spirit had been poured out even on Gentiles.46 For they heard them speaking in tongues[a] and praising God."