Have you ever had a really, really bad day? If you have, it still probably wasn’t as bad as the one David was having: it started when he got fired, and went downhill from there. But Scripture tells us that David “strengthened himself in the Lord.” What does that mean? How did he do it? What good did it do? And most importantly, can we do it too? Pastor Luke explores the answers to these questions in “Commonwealth,” part six of his “Summer Blockbusters” series of messages. Text: 1 Samuel 30.