Well so far, I’m thinking

1. Heaven by Lisa Miller
2. Irreligion by John Allen Paulos
3. The Book of Enoch translated by R.H. Charles
4. The Book of Jubilees translated by R.H. Charles
5. God is Not Great by Christopher Hitchens 
6. The Will to Believe by William James
7. A Buddhist Bible edited by Dwight Goddard
8. Wisdom of the Buddha: The Unabridged Dhammapada translated by F. Max Muller
9. The Koran translated by John Medows Rodwell
10. Why I Am Not a Christian by Bertrand Russell 
11. The Physics of Immortality by Frank J. Tipler
12. The Satanic Bible plagiarized by Anton Szandor LaVey

Those are the ones I’ve thought about - there’s more on my shelf, but I dunno if I’m going to read them. I’m thinking of adding:

1. The Book of Acts
2. The Book of Revelation
3. The Book of Lamentations 
4. The Gospel of Judas translated by R. Kasser and M. Meyer
5. The Letter of Jeremiah
6. The Book of Daniel
7. The Dead Sea Scrolls by Geza Vermes
8. Selections from The Book of Genesis
9. Inferno by Dante Alighieri translated by Henry Wadsworth Longfellow
10. The City of God by Saint Augustine

I’m hoping to find a few other books - from recommendations - and order the first two linked in the hope-to-add list.