1 Kings 15:18 - Ellicott's Commentary On The Whole Bible

Sent them to Ben-hadad. — This shows that Syria, recovering its independence at the fall of Solomon’s empire, was already attaining the formidable power, which so soon threatened to destroy Israel altogether. The Ben-hadad of the text is the grandson of Hezion, who must be the Rezon of 1 Kings 11:23. Already, as we gather from the next verse, there had been leagues between Syria and Judah in the preceding reign. Now it is clear that Baasha had attempted to supersede these by a closer league — possibly, like Pekah in later times (2 Kings 16:5-6), desiring to strengthen and secure himself against invasion by the subjugation of Judah. Asa naturally resolved to bribe Ben-hadad by presents to prefer the old tie to the new; but he went beyond this, and proposed a combined attack on Israel, for the first time calling in a heathen power against his “brethren, the children of Israel.” It was an expedient which, though it succeeded for its immediate purpose, yet both as a desperate policy and an unfaithfulness to the brotherhood, which, in spite of separation and corruption, still bound the two kingdoms in the covenant of God with Abraham, deserved and received prophetic rebuke. (See 2 Chronicles 16:7-9.) Just so Isaiah, in the days of Ahaz and Hezekiah, denounced the vain trust in confederacies with the neighbouring nations and alliance with Egypt (Isaiah 30:1-17).