What is the evidence of the baptism in the Holy Spirit?
The only clear scriptural evidence of the baptism in the Holy Spirit is speaking in tongues. The first Christians to be baptised in the Holy Spirit were the 120 gathered in the upper room at Pentecost. The unique evidence that the 120 received the Holy Spirit was that “they began to speak in other tongues” (Acts 2:4). All the other spiritual gifts, such as healing and prophecy, appear in the Old Testament and in the gospels. But with the descent of the Holy Spirit at Pentecost, which signified God’s presence in the disciples’ lives in a new dimension, God gave a new gift: the gift of tongues. The book of Acts records five separate occasions when the Holy Spirit was received. On three of these occasions, speaking in tongues is specifically mentioned as the visible sign accompanying the experience: at Pentecost (see Acts 2:4), at the house of Cornelius (see Acts 10:44–46), and at Ephesus (see Acts 19:6). Paul received the Holy Spirit when Ananias laid hands on him and prayed (...