For most Christians the Holy Spirit is the third person of the Holy Trinity (Father, Son, and Holy Spirit). The Holy Spirit, or Holy Ghost, is celebrated on the day of Pentecost, this year on 12 June.
According to the biblical narrative (Acts 2:1-6) on that day while the Apostles were together “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…”
According to traditions and cultures there are various ways of describing the Holy Spirit, ranging from “a Person really distinct as such from the Father and the Son, God and consubstantial with the Father and the Son” (Roman Catholic) to “a peculiar effect of divine flatulence hissing into the ears of a few chosen of God” (Voltaire).

