My mother in law who goes to our local baptist church will not stop trying to get us to go. She is even went to the extreme of telling our two sons who are four and seven that they need to try to make mommy and daddy take them to church. First of all neither one of us were raise baptist. I am happy that she has found a church she feels comfortable in and is happy. But to be honest with you we have not found that yet. We believe in God and teach our sons about him. How do we get her to stop? And yes we have taken the kids to the bible study a few times to make her happy and to compromise but she just won't quit.
Tater, I have a good friend who attends a Southern Baptist church. He has been a member there for years and it means a lot to him. I went with him to a couple of things, but when I noticed the bookstore they had in the church carried a number of books written by televangelists about other Christian denominations that some consider to be cults, as well as books where fundamentalist preachers explain what is wrong about other world religions, I had to tell him that it would be better if I did not come to any church services, as I could not in good conscience support the sale of books that strike me as being full of half-truths, lies, and perceptions by people who should be spending their time promoting their own faith understandings, not tearing down those of others.
We still get along fine, and I will occasionally go with him to a Wednesday night potluck. But he does not ask me to go to church services with him any more.
I can understand that your mother in law would love to have you guys be in the same church - but if it ain't your cup of tea for some reason, she needs to respect that. She also needs to respect that she is not the one who is responsible for rearing your children - you are. That means you determine what type and how often your children are exposed to religious matters. Not her.
I'm sure, just like my friend, the reasons for the continued entreaties coem with the best of intentions. Nevertheless, for your own good,and the good of your children, you need to be polite, but firm.