The punishment phase begins today in Eldorado for an FLDS member convicted of sexually assaulting a child.

After deliberating less than three hours on Thursday, the jury in the trial of Raymond Jessop found him guilty.

Jessop could be sentenced to anywhere from two to 20 years in prison and be fined up to $10,000 dollars.

Prosecutors claimed the 38-year-old member of the Fundamentalist Church of Jesus Christ of Latter Day Saints took a 16-year-old girl as a spiritual wife in 2004 at the YFZ Ranch and fathered a daughter with her.

Attorneys did not call Jessop, or the now 21-year-old woman to the stand to testify in this case.

Jessop was the first of the sect to stand trial.  Eleven other FLDS members were indicted on criminal charges after last year's raid on the ranch in Eldorado.

Most of the evidence presented in this child sexual assault case was seized during the raid at the group's ranch in April of last year. It turned into the largest child custody case in history. During testimony, jurors heard about priesthood records, and personal and family records that came from a concrete reinforced vault inside the temple annex on the 1,700 acre ranch.

The evidence inlcuded photo albums, dictation from FLDS prophet Warren Jeffs and even birth and nursing mother lists. Members of theFLDS Church are taught to keep very accurate family records. And, much of that evidence was presented in the state's case to show Jessop had sex with a 16-year-old girl five years ago at the ranch, who was not legally his wife, but one of his eight celestial--or spiritual--wives.

D.N.A. forensic evidence indicated a 99.9 percent probability that Jessop is the father of the victim's young daughter.