LA GRANGE, Illinois — Two more people, now totaling 18, are suing 81-year-old Bill Gothard, founder of the Institute in Basic Life Principles (IBLP), for sexual harassment. The plaintiffs’ lawyer, David Gibbs, compared Gothard’s case to Billy Cosby’s situation, referring to the sexual assault lawsuit against the comedian. “More and more victims keep coming forward telling the same story,” Gibbs…