In 1907 Lake was converted to Pentecostalism when Charles Parham staged a tent revival in Zion in an attempt to woo Dowie's supporters. After Parham's departure a group of several hundred "Parhamites" remained in Zion, led by Thomas Hezmalhalch—a recent arrival from the Azusa Street Revival. As 1907 wore on, Lake grew in stature among this group, and was usually listed as co-leader. After Parham's arrest for (unsubstantiated) reports of sodomy and pedophilia in the summer of 1907, the Parhamites descended into disorganization. Believing that many had been possessed by demons, a number of brutal exorcisms began, in which at least two deaths occurred. non-working citation links In the face of arrests and potential mob violence, the Parhamites were forced to flee en masse from Illinois. Lake and Hezmalhalch left for Indianapolis. Once there, they raised $2000 to finance a Pentecostal mission to South Africa.