Baby's father is not religious

I think too much and my baby is only 18 weeks along. This is my first child. I want my child to be brought up in a wonderful environment, to be involved with my church often. The baby's father thinks I plan to "brainwash" him/her. I feel lost, I have tried to convince the baby's dad that the Lord is not to joke about. I don't want him to influence the baby. We obviously are not together since in many ways we don't get along. Co-parenting is what I hope will happen. Not very sure now but I can't be bitter and selfishly keep the baby from him. I guess I would like advice on how to explain to the baby's father why I don't see it as "brainwashing", I hate how he used that word.