'Extremity' in the Bible

And it hath come to pass, in that day, Jehovah doth hiss for a fly that is in the extremity of the brooks of Egypt, And for a bee that is in the land of Asshur.

By the hand of thy servants Thou hast reviled the Lord, and sayest: In the multitude of my chariots I have come up to a high place of hills, The sides of Lebanon, And I cut down the height of its cedars, The choice of its firs, And I enter the high place of its extremity, The forest of its Carmel.