Inspired Reads is a great resource for links to free (and frugal) Christian e-books (thank you to Mary H for the referral!). They're meant for Kindle readers but I believe Amazon.com provides a free cloud drive (online storage) and e-reader (downloadable to your personal computer) to anyone with a valid email address. I use the free program (I don't have a Kindle) and have downloaded several of the free books successfully. A Time For Peace by Barbara Cameron, pictured above, is currently free at Amazon.com through the link provided at Inspired Reads. As stated on the Inspired Reads website, "Though free at time of posting, prices may change at any time. Please verify that the “Kindle Price” is $0.00. If you see a price for “Prime Members” or “read for free”, then the book is NOT free any longer."
Hope you find a free Christian book to enjoy! May God bless you!