1 Samuel 4:11

The ark of God was taken; which God justly and wisely permitted; partly, to punish the Israelites for their profanation of it; partly, that by taking away the pretences of their foolish and impious confidence, he might more deeply humble them, and bring them to true repentance; partly, that the Philistines might by this means be more effectually convinced of God's almighty power, and of their own and their gods impotency, and so a stop might be put to their triumphs and insultations, and to their rage against the poor Israelites, whom otherwise in human appearance they might easily have rooted out. Thus as God was no loser by this event, so the Philistines were no gainers by it; and Israel, all things considered, received more good than hurt by it, as we shall see.