I need a wise advice please important?

My husband found a new job that he likes, but his manager is jehovah witness, and the whole lunch time or any oportunity he is talking about jehovah witness to be the true religion. Its.become very annoying to my husband he is feeling pressure to attend to his church. He is probably afraid to loose his job. Whats the best way to manage this situation?? Or how can he answer to him without offending him???