It was springtime, a time of renewal and new beginnings. But for kings and armies, it was also the season of conflict. Why was this specific time linked to battle?
The Bible often marks time by seasons, and for ancient Near Eastern kings, spring signaled the start of the military campaign. After the harvest was gathered and before the next planting season, resources were available, and the weather was conducive to travel and fighting. Kings were expected to lead their armies in person, demonstrating their strength, protecting their borders, and expanding their influence. It was a public, visible duty, a core part of kingship.
By staying behind, David was breaking with this established norm. He wasn't just missing a battle; he was absent from a fundamental aspect of his role as king.