'Strength' in the Bible

and I have broken the pride of your strength, and have made your heavens as iron, and your earth as brass;

And your strength shall be spent in vain: for your land shall not yield her increase, neither shall the trees of the land yield their fruits.

They will therefore stumble over each other as if running from the sword, although no one is pursuing; and you will have no strength to stand up before your enemies.