You have to first believe in God .
We don't believe in anything until we see it .or is proved by some science . I won't believe in higg's boson until the LHC proved it .
anyways , but its inverse in case with god . First you need to have blind belief on him and then you will know he does really exist and he will one day even show up when you are in need .
So , with god , its not seeing is believing , but , believe and then see .