There is one element that ties all religions together, and that's a deity. If you and your spouse are having trouble choosing between you beliefs, focus on the common thread. Erin M. realized this after her son met with his Catholic school's priest. "He said that his priest told him that as long as he believes in God the rest doesn't really matter," she says. "So we plan to teach them about God, but we're not going to be strict about it."