MADISON, Ala.  On a January night nine years ago, Laura Snider was saved.

A 27-year-old single mother at the time, Mrs. Snider felt she had ruined her life through a disastrous marriage and divorce. But in her kitchen that night, after reading pamphlets and Bible passages that her boss had pointed her to, she realized she was a sinner, she said, she prayed for forgiveness, and put her trust in Christ.

Four years later, the conservative brand of Christianity Mrs. Snider embraced became the source of a bitter, continuing custody battle over her only child, Libby Mashburn.

Across the country, child-custody disputes in which religion is the flash point are increasing, part of a broader rise in custody conflicts over the last 30 years, lawyers, judges and mediators say.

“There has definitely been an increase in conflict over religious issues,” said Ronald William Nelson, a Kansas family lawyer who is chairman of the custody committee of the American Bar Association’s family law section. “Part of that is there has been an increase of conflicts between parents across the board, and with parents looking for reasons to justify their own actions.” Another factor, he said, is the rise of intermarriage and greater willingness by Americans to convert.