I don't think much of Pat Robertson. I think he's a fraud. But God is not a fraud. Neither are those who legitimately serve him.
One thing that's extremely obnoxious about a lot of atheists is their smug sense of superiority when it comes to their unbelief.
I know that God exists. I know that because of what I've seen in my prayer life. I've seen God change me and I've seen God change other people. People seldom change for the better through self-effort. Not only that, I'm fully confident in the authorship and reliability of the Bible. There have been hundreds, if not thousands, of prophecies that have been literally fulfilled to the smallest detail.
Such as David talking about crucifixion hundreds of years before it was invented. He prophesied about Jesus' crucifixion a thousand years before it happened.
(Psalms 22:16 NIV) Dogs have surrounded me; a band of evil men has encircled me, they have pierced my hands and my feet.
(Psalms 22:18 NIV) They divide my garments among them and cast lots for my clothing.