The classic intro to Christianity, Knowing God by J.I. Packer, was published 50 years ago. To celebrate this anniversary, Derek, Alastair, and Matt welcome Fred Sanders back to the show to discuss the distinctives of evangelical spirituality and practice which shine forth in Packer's book. They also discuss the doctrine of God, classic hymns, the Keswick movement, and the contemporary literary context of which Knowing God may be the apex. Full show notes at www.merefidelity.com. Timestamps: Half a Century [0:00] Evangelical Spirituality [5:31] What's Missing [11:42] Old Books [13:04] Keswick [17:55] Experience and Assurance [27:52] Thin and Thick Piety [34:09] Active/Contemplative [40:09] Remediation [42:11]