I want to know the answer to the following question:
Did Athanasius feel that it was important to believe that Jesus was the Son of God?
All the background I'm provided with is that "This letter shows clearly his stand that accepting Jesus is the Divine Son of God is not optional but necessary; "I know moreover that not only this thing saddens you, but also the fact that while others have obtained the churches by violence, you are meanwhile cast out from your places.". Is that enough to answer the question?
Answer: yes