'Enemy' in the Bible

“When Your people Israel are defeated before an enemy, because they have sinned against You, if they turn to You again and confess Your name and pray and make supplication to You in this house,

“If there is famine in the land, if there is pestilence, if there is blight or mildew, locust or grasshopper, if their enemy besieges them in the land of their cities, whatever plague, whatever sickness there is,

“When Your people go out to battle against their enemy, by whatever way You shall send them, and they pray to the Lord toward the city which You have chosen and the house which I have built for Your name,

“When they sin against You (for there is no man who does not sin) and You are angry with them and deliver them to an enemy, so that they take them away captive to the land of the enemy, far off or near;

Ahab said to Elijah, “Have you found me, O my enemy?” And he answered, “I have found you, because you have sold yourself to do evil in the sight of the Lord.