It doesn't matter to God whether humans believe or do not believe because He is not so easily swayed by our drama, our roller coaster life, our emotional outbursts. Human's are all bi-polar, just to different extremes.
It doesn't matter now whether you believe or not but in your future it will.
I find that to be just such an utterly strange statement.
When else would it be important to experience God but in the now moment?
I somehow think it's rather more like....
"God says to christians when they reach the pearly gates....
"I sent prophets, I sent Y'shua to tell you that the Kingdom is NOW,
and you did not enter into the fullness of NEW LIFE on earth,
in His example, cause you were so concerned with "winning" it
when your body was laid 6 feet under. The gates were before you all along.
I sent you windows, and doors in the spirit, but you chose doctrine instead of freedom.
You kept your eyes on the future... instead of walking into/in eternity."
"You forfieted your inheratance on earth, and yes. It does matter to me.
I'm not angry. But it's a real shame. Don't you think?"