'Enmity' in the Bible

Thus said the Lord Jehovah: Because of the doings of the Philistines in vengeance, And they take vengeance with despite in soul, To destroy -- the enmity age-during!

Because of thy having an enmity age-during, And thou dost saw the sons of Israel, By the hands of the sword, In the time of their calamity, In the time of the iniquity of the end: