John Wesley on 2 Chronicles 16:12

Sought not - He did not humble himself before God, but put his confidence in the skill and faithfulness of his physicians. His making use of physicians was his duty, but his trusting in them, and expecting that from them, which was to be had from God only, was his sin and folly. The help of every creature must be used, with an eye to the creator, and in dependence on him, who makes every creature that to us which it is, without whom the most skilful and faithful are physicians of no value.