The Thessalonians already received instruction on 'how you ought to walk.' What does it mean to walk in a way that pleases God, and how do we learn it?
Paul refers back to teaching they had already received, emphasizing that pleasing God isn't a new revelation but a continuation of established instruction. This 'walking' involves their conduct, their daily choices, and their overall lifestyle. It's about aligning their actions with God's will, not as a means to earn salvation, but as a response of gratitude and love for what Christ has done. This instruction wasn't just theoretical; it was practical guidance for godly living.