Well even that awful book of yours seems to indicate that atheists have existed for a very long time, in that pathetic line from psalms that is trotted out by rote at us so frequently that it pains me to quote it:
"The fool has said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that does good.
"The fool has said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that does good.