With regards to a deity, the only acceptable proof that will ever be good enough will come in the form of scientific evidence. In other words, the deity you believe in should be able to be proven scientifically, with methods based on observation and not opinion.
If you cannot produce that which you believe, in an acceptable form, that is not based on your opinion or your personal beliefs, then you will forever lose this argument.
If you cannot produce that which you believe, in an acceptable form, that is not based on your opinion or your personal beliefs, then you will forever lose this argument.
Disclaimer: I am only responsible for what I say, not what you choose to understand.