15:18 Were left - What either Shishak had left, or Abijam, or Asa, or others, both of Israel or Judah had dedicated; which probably was not inconsiderable, because Asa had got great spoils from Zerah, 2Chron 14:9 - 15, and he and his numerous and prosperous people, did at this time express a great zeal for the house and worship of God. Sent them - Wherein he committed three great faults, amongst many others, first, he alienated things consecrated to God, without necessity. Secondly, he did this out of distrust of that God whose power and goodness he had lately experienced. Thirdly, he did this for an ill intent, to hire him to the breach of his league and covenant with Baasha, ver.19, and to take away part of that land which by right, and the special gift of God, belonged to the Israelites.
15:9-24 Asa did what was right in the eyes of the Lord. That is right indeed which is so in God's eyes. Asa's times were times of reformation. He removed that which was evil; there reformation begins, and a great deal he found to do. When Asa found idolatry in the court, he rooted it out thence. Reformation must begin at home. Asa honours and respects his mother; he loves her well, but he loves God better. Those that have power are happy when thus they have hearts to use it well. We must not only cease to do evil, but learn to do well; not only cast away the idols of our iniquity, but dedicate ourselves and our all to God's honour and glory. Asa was cordially devoted to the service of God, his sins not arising from presumption. But his league with Benhadad arose from unbelief. Even true believers find it hard, in times of urgent danger, to trust in the Lord with all their heart. Unbelief makes way for carnal policy, and thus for one sin after another. Unbelief has often led Christians to call in the help of the Lord's enemies in their contests with their brethren; and some who once shone brightly, have thus been covered with a dark cloud towards the end of their days.