2 Chronicles 16:9 - Joseph Benson’s Commentary on the Old and New Testaments

The eyes of the Lord run to and fro throughout the whole earth He governs the world in infinite wisdom, the creatures, and all their actions, are continually under his eye, and he exercises a most watchful providence over all those who sincerely commit themselves to his care, and depend upon him in well-doing, and will not fail to protect them. To show himself strong in behalf of them whose heart is perfect, &c. Upright and sincere; who truly desire and endeavour to know and do his will in all things. Such may he sure of his protection and aid, and have all the reason in the world to depend thereon. A firm and lively faith in this brings us near to God, and unites us to him: but a practical disbelief of it produces the contrary effect, and is at the bottom of all our departures from God, and double dealing with him. Asa could not trust God, and therefore made court to Ben-hadad, in which, as the prophet here tells him, he did foolishly, both acting against his own interest, and incurring God's displeasure, who pronounced that from henceforth he should have wars, as a chastisement of his folly. It is, indeed, a foolish thing to lean on a broken reed, when we have the Rock of ages to rely on. Here we learn in what sense we are to understand this sacred writer, when he says, (2 Chronicles 15:17,) that the heart of Asa was perfect all his days: he was perfect and sincere in the things there spoken of, in the establishment of the outward worship of God; but not in the inward worship of him, trusting in, fearing, and loving him with all his heart. Or, he was upright and sincere in the general course of his life, though in some particulars, whereof this was one, his heart did not perfectly cleave to God as it should have done.