The only infallible book we can recommend is The Bible, but we’ve found these to be helpful in our faith.
Holly
The Fuel & the Flame by Steve Shadrach and Paul Worcester
Women of the Word by Jen Wilkin
Desiring God by John Piper
Mere Christianity by C.S. Lewis
Even Better Than Eden by Nancy Guthrie
Making Sense of God by Tim Keller
Confronting Christianity by Rebecca McLaughlin
Through Gates of Splendor by Elizabeth Elliot
The Gospel Comes with a House Key by Rosaria Butterfield
Kayli
The Sacred Search by Gary Thomas
The Christian Atheist by Craig Groeschel
The 3D Gospel by Jayson Georges
The Naked Truth About Sexuality by Havilah Cunnington
Regan
Mere Christianity by C.S. Lewis
Case for Christ by Lee Strobel
The Gospel Comes with a House Key by Rosaria Butterfield
Another Gospel? by Alisa Childers
Finding the Right Hills to Die On by Gavin Ortlund
Uninvited by Lysa Terkeurst
The Sacred Search by Gary Thomas
Fervent by Priscilla Shirer
Stay Salt by Rebecca Manley Pippert
Abide in Christ by Andrew Murray
Allison
The Four Loves by C. S. Lewis
Trade Your Cares for Calm by Max Lucado
Stay by Dave Burchett