'Power' in the Bible

During the war between the house of Saul and the house of David, Abner kept acquiring more power in the house of Saul.

And Abner was very angry at the words of Ish-bosheth, and he said, Am I a dog's head of Judah? I am this day doing all in my power for the cause of your father Saul and for his brothers and his friends, and have not given you up into the hands of David, and now you say I have done wrong with a woman.

Now take action, because the Lord has spoken concerning David: ‘Through My servant David I will save My people Israel from the power of the Philistines and the power of all Israel’s enemies.’”

As for me, even though I am the anointed king, I have little power today. These men, the sons of Zeruiah, are too fierce for me. May the Lord repay the evildoer according to his evil!”

David's power grew steadily, for the Lord God who commands armies was with him.

And David and all the men of Israel made melody before the Lord with all their power, with songs and with corded instruments and instruments of brass.

And after this it came to pass that David smote the Philistines, and subdued them; and David took the power of the capital out of the hand of the Philistines.

And David smiteth Hadadezer son of Rehob, king of Zobah, in his going to bring back his power by the River Euphrates;

For the king will give ear, and take his servant out of the power of the man whose purpose is the destruction of me and my son together from the heritage of God.

Suddenly the Cushite arrived and said, "May my lord the king receive the good news, for Yahweh has vindicated you today from the power of all who stood up against you."

And the Gibeonites said to him, It is not a question of silver and gold between us and Saul or his family; and it is not in our power to put to death any man in Israel. And he said, Say, then, what am I to do for you?

David sang to the Lord the words of this song when the Lord rescued him from the power of all his enemies, including Saul.

Indeed,with your help I can charge against an army; by my God's power I can jump over a wall.

God is my strength and power: and he maketh my way perfect.