The Paraclete, "the one who is to come," is mentioned in the Bible in the Gospel of John. The term is used in two ways: First, the author of the book uses it in reference to Christ's ministry on Earth (both before and after his death) and second, Christ himself uses the term to describe a mysterious figure that will be sent to the disciples after his death to "be with them always." In the Catholic tradition this was taken to be the Holy Ghost, the third member of the Trinity, who came to the disciples at the feast of Pentecost and gave them all the ability to speak in tongues and preach the gospel.