In chap. xviii., however, we have a very different state of things. Jehoshaphat's prosperity is used by the devil as a snare for him. "Jehoshaphat had riches and honors in abundance, and _joined affinity with Ahab_." We have already observed Jehoshaphat fortifying his _kingdom_; but the enemy comes upon him in a way for which Jehoshaphat does not seem to have prepared himself; he does not attack his _kingdom_, he attacks his _heart_. He comes not as the lion, but as the serpent. Ahab's "sheep and oxen" are found more suitable and effectual than Ahab's men of war. Had Ahab declared war against Jehoshaphat, it would only have cast him upon the Lord; but he does not. Jehoshaphat's kingdom is fortified against Ahab's hostilities, but his heart lies open to Ahab's allurements. This is truly solemn! We often make a great effort against evil in one shape, while we are allowing it to get in upon us in another. Jehoshaphat had at first strengthened himself against Israel, but now he joins affinity with Israel's king. And why? Had any change for the better taken place? Had Ahab's heart become more tender toward the Lord? By no means. _He_ was still the same, but Jehoshaphat's conscience had lost much of its early tenderness and sensitiveness: he had come near to the evil, and tampered with it; he had touched the pitch, and was defiled by it. "He joined affinity with Ahab." Here was the evil,--an evil which, however slow in its operation, would certainly produce its own fruit sooner or later. "He that soweth to his flesh shall of the flesh reap corruption." (Gal. vi. 8.) The truth of this must inevitably be realized. Grace may triumph in the forgiveness of sin, but the legitimate fruit will spring forth in due time. The Lord put away David's sin in the matter of Uriah, but the child died, and Absalom arose in rebellion. So it will ever be. If we sow to the flesh, we must reap corruption; the flesh can produce naught else.
In Jehoshaphat's case, it was not until _after years_ that the results of his false steps began to show themselves: "And after certain years, he went down to Ahab to Samaria; and Ahab killed sheep and oxen for him in abundance, and for the people he had with him, and persuaded him to go up with him to Ramoth-gilead." Satan knows his ground; he knows where the seed of evil has taken root; he knows the heart that is prepared to respond to his temptation; he knew that the "affinity" into which the king of Judah had entered with the king of Israel had prepared him for further steps in a downward course. When a Christian enters into connection with the world, he lays himself open to be "_persuaded_" by the world, to enter upon an _un_christian course of action. David took Ziklag from Achish (1 Sam. xxvii. 6), and the next step was, to join Achish against Israel. (1 Sam. xxviii. 1.) The world will never give any thing to a child of God without making large demands in return. When the king of Judah had allowed Ahab to kill sheep and oxen for him, he would have found it difficult not to meet Ahab's desire in reference to Ramoth-gilead. The safest way therefore is, to be no debtor to the world. Jehoshaphat should have had nothing whatever to do with Ahab; he should have kept himself pure. The Lord was not with Ahab, and though it might seem a desirable thing to recover one of the cities of refuge out of the hand of the enemy, yet Jehoshaphat should have known that he was not to do evil that good might come. If we join with the world in its schemes, we must expect to be identified with it in its convulsions.