You are correct. It can be tricky. It is impossible to remove cultural context from religion. My faith is shaped by the culture of a country on another continent. I can not hide it.
I agree that original writings are important. And it is important to understand the context and culture at the time of religious works.
I am not sure that we can ever completely remove our biases, even those that shape how we shape our faith. My goal is to seek relation with God (reconciliation) over religion. When I live in right relationship then I can live in Truth.
So good. Loved this post. I try to limit my interaction with people of a critical spirit, if possible. Conversations with them are often fruitless. But, when it's necessary, I try to remove my emotions, realizing that their criticism comes from within then and usually has little to do with me, basically offering them grace as you mentioned.