his book has been the authoritative guide on the topic of the baptism in the Holy Spirit with the evidence of speaking in tongues for approximately four decades. Author Don W. Basham neither denies nor ignores any of the controversy surrounding speaking in tongues. Instead, he provides a firm scriptural basis for those who might have questions or doubts about tongues, and encourages anyone interested how they can personally experience the blessing God offers through the baptism in the Holy Spirit with the confirming evidence of speaking in tongues.