What does it mean that 'the just shall live by faith'?
It means the righteous live before God by faith, not by works, religion, or ritual. God's righteousness is revealed from faith to faith, and faith is simply taking God at His Word. This is the only basis on which God deals with the human race, not human or denominational righteousness.
Les explains that "the just shall live by faith" is a quotation from the Old Testament—he suggests it may be from Amos—and it means the righteous live not by works, religion, or ritual, but by faith. He notes Martin Luther reached this same conclusion while cloistered in a Catholic monastery; when the light shone in, he concluded "the just shall live by faith," and it became the great theme of the Reformation. Les warns that Christianity has come close to losing this truth again, being wrapped up in works, materialism, and programs. He defines faith as taking God at His Word and points to Hebrews 11, the great faith chapter, beginning with verse 1.