Description: It is quite an assertion to claim that one is filled with the Spirit of God. What does a person offer as proof that this is actually true? Pentecostals at the turn of the twentieth century read the Bible, debated the issue, and then proposed an evidence they thought the scriptures indicated was the primary verification of Spirit-baptism. It was determined that the evidence to prove one had been baptized with the Holy Spirit was that the person had spoken in an unknown language as prompted by the Holy Spirit. The primary evidence of Spirit-baptism, it was concluded, was the...