An Enlightening Conversation

I met a couple of very nice ladies yesterday. They came to my door and wanted to enlighten me about Heavenly Mother. It was an interesting conversation but the highlights were that one of the ladies challenged me to show her just one verse in the Old Testament where the Israelites were called the "children of God." I'm not sure what her purpose was because she was rather surprised when I got out my concordance and found Deuteronomy 14:1 for her. Obviously I shot down whatever the "proof" was that she was going to give me because she changed the subject.
I decided to return the favor, so I asked her to show me just one verse anywhere in the bible where it said we have a "heavenly mother." She said she'd given me the proofs; I told her that she'd taken a few passages out of context.
That's when she realized that I knew a little too much about the bible to be interested in learning about Heavenly Mother, so she told me that Jesus had already returned. I disagreed and offered to look at the prophecies about the Second Coming to show her why that wasn't possible. She got a smug smile and told me that I would see.
In the course of the conversation, she also told me that she has no questions about the bible anymore because Heavenly Mother has revealed all to her. She never questions the leaders of her church because if they're wrong, Heavenly Mother will correct them. She told me Heavenly Mother has to be right because over a million people belong to her church.
I asked her and her friend if they were willing to put their beliefs to the test. She said she had no need to. I said I wasn't afraid to test my beliefs and if she or her friend wanted to come back and explore the bible with me to see who's beliefs hold up, I'd be willing to study with them.
I wonder if either of those ladies will ever question what they've been taught. I wonder if they're willing to have their faith challenged. I know I am. I hope you are. We can never ever blindly accept what the leaders of our church say, the bible is very clear on that. We must examine everything they say, hold it up against the light of the bible and see if it shines true.
It is my earnest desire that every Christian would learn how to study the bible properly and for themselves (though not by themselves).
Do you study the bible properly? Do you know how? Are you willing to learn?