-Speaking in tongues is a necessary sign of receiving the Holy Spirit and thus a condition for salvation;
-Only those baptized "in the name of Jesus"not "in the name of the Father, and of the Son, and of the Holy Spirit" are true Christians;
-Jesus is not the eternal Son of God but rather the Father manifested on earth
But an inquisitive mind, careful study, and the action of the Holy Spirit finally led Mark out of Oneness Pentecostalism and into the Catholic Church. A faith-strengthener for Catholics and an intriguing challenge to those who reject the Trinity.