Parts of The Bible and parts of Darwin's On the Origin of Species are - perhaps deliberately sometimes - unclear,

The Origin of Species is the beginning of a process which is getting steadily clearer as time marches on; unfortunately, the Bible still reads like the ravings of a mad horse, getting progressively less clear as we move away from that sort of thinking.

Ultimately I am an atheist because I can't conceive of a greater divinity than Duke Ellington, who was only too human.