If the Reformation doctrine of justification by "faith alone" was, as Protestant scholar Alistair McGrath describes it, a "theological novum," then what did Christians believe about salvation and justification prior to Martin Luther's revolution of 1517?

Matt Swaim and Ken Hensley continue their discussion of what led them to see that sola fide was an inadequate and incomplete description of how God saves His people, and share what picture began to form for them as they began to dive into the Old and New Testaments with a fresh set of eyes.