I asked a religious relative something along these lines.
Her response was that God would never ask people to do bad things, and if it seemed that He was that would just be someone else deceiving her.
I explained the atheist view on this sort of thing and then the conversation shifted directions before I thought to point out the example of God asking someone to sacrifice their child in the bible.
An acquaintance of my family said something like that to me years ago. My response at the time was to ask her whether that meant more generally that if something I think is bad is presented to me as Divine instruction, I should reject it, since it is clearly something other than God at work. Her response was that no, there's a difference between something that actually is bad, and something I just think is bad. I asked her how I tell the difference; she suggested I ask God. I tapped out.
Happy New Year! Here's the latest and greatest installment of rationality quotes. Remember: