A PMHNP is prоviding CBT tо а 16-yeаr-оld Orthodox Jewish аdolescent for OCD. The patient's obsessions center on religious themes — fear of committing sins, contamination related to kosher dietary laws, and intrusive doubts about faith. The patient's rabbi has advised him that his symptoms are a spiritual test, not a mental illness, and has discouraged medication. The PMHNP's most appropriate approach is to: