Ah yes, Certainty.
One of the linchpins of Christianity is Certainty.
I KNOW in who I have believed, said the Apostle Paul.
I have a KNOW-SO salvation, is a line often heard on Sunday Morning.
Doubt is of the Devil.
Saved or Lost.
Heaven or Hell.
Truth or Error.
A supernatural God who has a supernatural book which tells us of a supernatural salvation.
Read the rest here from Bruce at Restless Wanderings.