Jesus is the end of all religion. All the sacrifices of priests and people are rendered null and void by Jesus' one-time-for-all-time sacrifice for all people, everywhere, past, present, and future tense. Jesus' death and resurrection save us from our own religiosity.

Inspired by C.S. Lewis' classic work, The Screwtape Letters, The Withertongue Emails encourage readers in the twenty-first century to take seriously once again the dangers of ignoring the demonic and assuming that, because we are Christians, we cannot be tempted into sin and unbelief. In this work, Donavon Riley leads the reader through a young pastor's demonic temptation, seeming downfall, and final conversion to faith in Christ Jesus alone for his redemption and salvation.