I'm sorry, but what are you looking for? A magic pill or book that suddenly makes him "okay" with everything? Read around. There's no such thing. This question has been asked over and over by many many people, in long-term mono relationships, and just starting out. Here are the two main points you've been given so far.
1) If you just gave a talk about polyamory at your church, you should have the answers you need. Now you just need the questions. Ask him what questions he has, so you can answer them!
2) Communication. All you can do is be open and honest, and talk to him.
Let him do the internal work he needs to do. But if you came here wanting all these answers on how to MAKE someone suddenly accept and/or love poly, you shouldn't have given ANYONE information on poly. Or mono. Or dating. At all.