I am very sure the implication is that "your god" (from the person reading) does not exist/is made up by humans.
Anyways it's unlikely you can change someone that hates you. Depends on the scenario ofc, then again if they don't see you as a person it is practically imposible for that matter. (This was general but I guess it fits well) Of course it's not actually impossible but for that matter nothing is impossible and there is just a really small chance it happens. Then again it's sometimes not worth it to try to change someone, for example if it puts you in danger.
I guess hate doesn't do much but on the flip side spite is also a really strong motivator. Sometimes.
Not everything was evem necesarily related specifically but yeah. I wish you luck tho