In this crisis Asa did not put his trust in the "fenced cities in Judah" that he had built, with walls, and towers, gates, and bars, nor in the "mighty men of valor" in his carefully trained army. Verses 6-8.
The king's trust was in Jehovah of hosts, in whose name marvelous deliverances had been wrought in behalf of Israel of old. Setting his forces in battle array, he sought the help of God.
Having sought the Lord in the days of prosperity, the king could now rely upon Him in the day of adversity. His petitions showed that he was not a stranger to God's wonderful power. "It is nothing with Thee to help," he pleaded, "whether with many, or with them that have no power: help us, O Lord our God; for we rest on Thee, and in Thy name we go against this multitude. O Lord, Thou art our God; let not man prevail against Thee." Verse 11.
The prayer of Asa is one that every Christian believer may fittingly offer. We fight in a warfare, not against flesh and blood, but against principalities and powers, and against spiritual wickedness in high places. See Ephesians 6:12."
E.G.W.