I want to let you know about two new publications that you might find interesting.
One is by Edward Feser. Here is the Amazon link for his work, which deals with proving the existence of God:
Another book is by Rolf Furuli, a fellow Witness and friend:
I notice that both books are out of stock on Amazon, but they can also be ordered directly from their respective publishers.
Feser's publisher is Ignatius Press: https://www.ignatius.com/Products/FPEG-P/five-proofs-of-the-existence-of-god.aspx
Furuli's is published by Awatu: https://www.gulesider.no/f/awatu-publishers:87636063