1. The mighty men's courage (8-12)

When David was a shepherd-like leader, the people around him were inspired to give exemplary efforts. The "mighty men" of David were mighty most of all because of their courage to stand firm in the face of overwhelming opposition. Such courage is the fruit of faith. We also need such courage in our lives' spiritual battle.

2. A king worthy of loyalty (13-39)

Once, when David and his men were besieged by the Philistines, David thoughtlessly expressed his desire for water. Then, three of his mighty men went out, risking their lives, and broke through the Philistine lives to bring back water. David refused to drink the water, pouring it out before the Lord. This shows how David treasured the lives of his mighty men, seeing them with absolute value before God. This is why David's men would gladly pledge their lives to him.