'Enemy' in the Bible

"If your people Israel be struck down before the enemy, because they have sinned against you, and shall turn again and confess your name, and pray and make supplication before you in this house;

"If they sin against you (for there is no man who doesn't sin), and you are angry with them, and deliver them to the enemy, so that they carry them away captive to a land far off or near;

But if you will go, take action, be strong for the battle. God will overthrow you before the enemy; for God has power to help, and to overthrow."

Under their hand was an army, three hundred thousand and seven thousand and five hundred, who made war with mighty power, to help the king against the enemy.