'Enemy' in the Bible

They brought Ish-bosheth’s head to David at Hebron and said to the king, “Here’s the head of Ish-bosheth son of Saul, your enemy who intended to take your life. Today the Lord has granted vengeance to my lord the king against Saul and his offspring.”

When Joab was besieging the city, he put Uriah in the place where he knew the best enemy soldiers were.

He rescued me from my powerful enemyand from those who hated me,for they were too strong for me.