John Wesley on 2 Kings 5:20

Gehazi - One would expect Elisha's servant should have been a saint: but we find him far otherwise. The best men, the best ministers, have often had those about them, that were their grief and shame. This Syrian - A stranger, and one of that nation who are the implacable enemies of God's people. As the Lord - He swears, that he might have some pretence for the action to which he had bound himself by his oath; not considering, that to swear to do any wicked action, is so far from excusing it, that it makes it much worse.