The jury deliberated about 3 1/2 hours before coming back with a guilty verdict in the trial of  polygamist church leader Warren Jeffs .  Jeff was accused of sexually assaulting two girls he had taken as "spiritual wives .  

The penalty phase of the trial was to immediately follow. Jeff faces a sentence of up to life in prison.

In closing arguments Thursday morning, Jeffs, who acted as his own attorney, stood mute during nearly all 30 minutes of his allotted time. He then mumbled a few words that sounded like "I am at peace" before sitting down.