From henceforth thou shalt have wars - As peace had been the reward of Asa's earlier faith 2 Chronicles 14:5; 2 Chronicles 15:5, so his want of faith was now to be punished by a period of war and disturbance.

Therefore - thou shalt have wars - And so he had with Israel during the rest of his reign, 1 Kings 15:32.

For the eyes of the Lord run to and fro throughout the whole earth,.... The eyes of his omniscience are everywhere, and the eyes of his mercy and goodness, of his care and providence, are here and there, and in every place throughout the whole world at once, see Zechariah 4:10,

to show himself strong in the behalf of them whose heart is perfect towards him; or, as in the margin, "strongly to hold" with such, to be on their side, take their part, strengthen them, support and supply them, and to protect and defend them who are sincere and upright in heart; whose graces are sincere and unfeigned, though not complete, nor they free from sin, and who, with the heart, sincerely believe in God, in which Asa at this time failed, though otherwise his heart is said to be perfect, 1 Kings 15:4, it was so in the general bent of it, and especially with respect to the worship of God, though there was something lacking in his faith at this time, as there often is in the best of men:

herein thou hast done foolishly; to trust in man, and not in the Lord, to part with his money, and lose the opportunity of having the whole Syrian army fall into his hands:

therefore from henceforth thou shalt have wars; which, though we read not of, was doubtless his case; some interpret it of his posterity.

"For Jahve, His eyes run to and fro throughout the whole earth, to show Himself strong with those whose heart is devoted to Him;" i.e., for Jahve, who looks forth over all the earth, uses every opportunity wonderfully to succour those who are piously devoted to Him. עם התחזק, to help mightily, as in 1 Chronicles 11:10. אליו שׁלם עם־לבבם is a relative sentence without the relative אשׁר with עם; cf. 1 Chronicles 15:12. "Thou hast done foolishly, therefore," scil. because thou hast set thy trust upon men instead of upon Jahve, "for from henceforth there shall be wars to thee" (thou shalt have war). In these words the prophet does not announce to Asa definite wars, but only expresses the general idea that Asa by his godless policy would bring only wars (מלחמות in indefinite universality), not peace, to the kingdom. History confirms the truth of this announcement, although we have no record of any other wars which broke out under Asa.

For the eyes of the LORD run to and fro throughout the whole earth, to show himself strong in the behalf of them whose heart is perfect toward him. Herein thou hast done foolishly: therefore from henceforth thou shalt have wars.

16:9 Done foolishly - It is a foolish thing to lean on a broken reed, when we have the rock of ages to rely upon. Perfect - Upright and sincere, as thine is not. He was sincere in the general course of his life, but some particulars, whereof this is one, his heart did not perfectly cleave to God.

to shew...: or, strongly to hold with them, etc

16:1-14 Asa seeks the aid of the Syrians, His death. - A plain and faithful reproof was given to Asa by a prophet of the Lord, for making a league with Syria. God is displeased when he is distrusted, and when an arm of flesh is relied on, more than his power and goodness. It is foolish to lean on a broken reed, when we have the Rock of ages to rely upon. To convince Asa of his folly, the prophet shows that he, of all men, had no reason to distrust God, who had found him such a powerful Helper. The many experiences we have had of the goodness of God to us, aggravate our distrust of him. But see how deceitful our hearts are! we trust in God when we have nothing else to trust to, when need drives us to him; but when we have other things to stay on, we are apt to depend too much on them. Observe Asa's displeasure at this reproof. What is man, when God leaves him to himself! He that abused his power for persecuting God's prophet, was left to himself, to abuse it further for crushing his own subjects. Two years before he died, Asa was diseased in his feet. Making use of physicians was his duty; but trusting to them, and expecting that from them which was to be had from God only, were his sin and folly. In all conflicts and sufferings we need especially to look to our own hearts, that they may be perfect towards God, by faith, patience, and obedience.