A man from a polygamist group in West Texas has been sentenced to 10 years in prison for sexual assault of a child.

Raymond Jessop was sentenced Tuesday by the same jury that convicted him last week.

The 38-year-old was the first member of the Fundamentalist Church of Jesus Christ of Latter Day Saints to go on trial since authorities raided their ranch in Eldorado last year.

Raymond M. Jessop, one of the leaders of a polygamist sect was convicted Thursday night of sexually assaulting an under-age girl whom the church elders had assigned to him as one of his nine wives.

The state used birth records, a marriage certificate and FLDS church records to show Jessop, already married, took the girl as a spiritual wife in 2004 when she was 16. [video]

Women in the Fundamentalist Church of Jesus Christ of Latter Day Saints polygamist sect were taught that their fathers or husbands and the sect’s prophet had the right to direct every aspect of their lives, a former member testified Wednesday in the child sexual abuse trial of a current sect member.

Prosecutors asked Musser to talk about her experience in the FLDS and how church records are kept, as they are relying heavily on records and dictations by jailed FLDS leader Warren Jeffs that were seized from the ranch.

A birthing center on the bottom floor of a log cabin-style building at a polygamist group’s West Texas ranch was set up like a medical office with one distict difference: A portrait of jailed polygamist sect leader Warren Jeffs hung over the delivery bed.

The photo was introduced into evidence by prosecutors in the trial of FLDS sect member Raymond Jessop.

Attorneys moved closer to seating a jury in the first criminal case resulting from the state’s 2008 raid on a polygamist sect’s ranch after narrowing a jury pool to 34 on Tuesday.

Raymond Jessop is the first of 12 FLDS men to be tried on a variety of sexual assault and bigamy charges as a result of the April, 2008 raid on the cult’s Yearning for Zion Ranch.

The first of a dozen polygamist sect members charged with abuse of women stands trial Monday, 18 months after agents raided the group’s remote ranch and carted off more than 400 children in the largest child-custody case in American history.

Raymond Jessop, 38, faces up to 20 years in prison if convicted of sexual assault of a child, a charge stemming from his alleged marriage to an underage girl in the Fundamentalist Church of Jesus Christ of Latter Day Saints. He will be tried later on a separate count of bigamy related to a second alleged underage bride.