How do we know baptism of the Holy Spirit is true?

The doctrine of baptism by the Holy Spirit is firmly established in the New Testament. Jesus Himself affirmed this promise of the Holy Spirit in John 16, explaining that the Spirit would guide believers into all truth and equip them for their mission. Furthermore, the Apostle Paul explains in 1 Corinthians 12:13 that all believers are baptized by one Spirit into one body, highlighting this as a fundamental aspect of our salvation. This promise of spiritual immersion into the body of Christ is central to understanding our new identity as believers and is evidenced through the transformational work of the Holy Spirit in the lives of those who believe.