Inerrancy speaks to what God’s Word is, while infallibility speaks to what God's Word does. Psalm 19 traces that progression beautifully. Psalm 19 presents a complete theology of Scripture in just a few verses. David begins with what God's Word is: perfect, sure, right, pure, clean, and true. He then shows what God's Word does: it restores, makes wise, rejoices, enlightens, and endures. Finally, he reveals how believers should respond: by trusting it, obeying it, treasuring it, seeking it, and living by it. The chart before us captures that inspired progression and serves as a roadmap for the passage.