דברי הימים ב, פרק י״ח, פסוק א׳

A king's reign is often defined by both his domestic prosperity and his foreign alliances. For King Jehoshaphat, immense wealth and strategic family ties played a central role in shaping his leadership. His secure economic standing is highlighted by a return to a detail mentioned previously regarding his great riches and honor. This repetition serves a specific purpose: it reveals that despite spending heavily on extensive building projects and funding a massive army, Jehoshaphat's fortune did not diminish. His vast wealth remained completely intact even after these significant national investments [מלבי״ם].

Once his royal status and financial security were firmly established, Jehoshaphat sought to build a bridge with the neighboring kingdom. He formed a strategic alliance with King Ahab of Israel, cementing the relationship by becoming family through marriage [ביאור שטיינזלץ]. The primary approach among commentators is that this union was forged by arranging a marriage for the next generation, with Jehoshaphat taking Ahab's daughter, Athaliah, to be the wife of his own son, Jehoram. While this is the widely accepted understanding of their new family tie, an additional perspective expands the scope of the alliance, suggesting that Jehoshaphat himself also married Ahab's sister [חומת אנך].