I am going to have to deal with the same thing in a few years. My mother and MiL will use tactics to try to seed my son with a yearning for something "better than this world." I am preparing myself for it now. They will tell my son about all the wonderful things that reside in their land of milk and honey. They will say that "loving" Jehovah brings us closer to that bliss. When my son asks about my standing with God, as he will notice his family doesn't do what the Grandmas describe is needed, they will be forced to give their "Bible-based" opinion. They might even try to instill fear about my demise within my child's mind.
BROOM THEM AWAY! It's the only way to repel them.
-Sab