1 Kings 20:22, commentary and pictures

After God had given Israel victory over Ben-hadad king of Syria through a prophet's warning, the prophet came again to warn and reprove Ahab. He told him to strengthen himself, to take heed and mark, and to consider what he does, because the king of Syria would come up against him again at the return of the year. That warning was fulfilled when Benhadad returned the following year and Israel fought the Syrians again. The repeated warning was another effort by God to win the weak Ahab, for the earlier victory had come from Jehovah and Ahab knew its source.

Benhadad's defeat had not ended his resolve but had sharpened his desire for revenge and conquest, making renewed conflict likely. A victory therefore is not a guarantee that the enemy will not return but a reason for watchfulness and preparation rather than carelessness and self-confidence. The command to strengthen oneself, stay alert, and consider what to do teaches that danger remains after success and the enemy will return.

Applied to spiritual conflict, a blessing or victory can be followed by an unexpected renewed temptation and attack. Success can bring overconfidence and carelessness to replace watchfulness and trust in God. That leaves a person unprepared and vulnerable to defeat, sin, and discouragement when the enemy attacks again. Strength and watchfulness are needed after victory as well as before it, so heeding the warning means being prepared rather than surprised.