What beliefs would we consider reasonable for a self proclaimed Christian to hold?

[Silver]

I do not have the burden of proof on me because God has never told anyone to prove His existence, that He says is His work.

A convenient, rubbish, apologetic that frees the believer from any intellectual responsibility. The same untruthful line could be used to personally validate belief in anything, and has been used to such an extent even especially by mentally ill people who prefer delusion over reality.