'Strength' in the Bible

Jeroboam did not again recover strength in the days of Abijah; and the Lord struck him and he died.

Then Asa called to the Lord his God and said, “Lord, there is no one besides You to help in the battle between the powerful and those who have no strength; so help us, O Lord our God, for we trust in You, and in Your name have come against this multitude. O Lord, You are our God; let not man prevail against You.”