1 Samuel 17:49-51
17:49 David reached his hand into the bag and took out a stone. He slung it, striking the Philistine on the forehead. The stone sank deeply into his forehead, and he fell down with his face to the ground.
17:50 David prevailed over the Philistine with just the sling and the stone. He struck down the Philistine and killed him. David did not even have a sword in his hand.
17:51 David ran and stood over the Philistine. He grabbed Goliath’s sword, drew it from its sheath, killed him, and cut off his head with it. When the Philistines saw their champion was dead, they ran away.
1 Samuel 23:5
23:5 So David and his men went to Keilah and fought the Philistines. He took away their cattle and thoroughly defeated them. David delivered the inhabitants of Keilah.
Psalms 18:32
18:32 The one true God gives me strength;
he removes the obstacles in my way.
Psalms 18:39
18:39 You give me strength for battle;
you make my foes kneel before me.
Isaiah 45:5
45:5 I am the Lord, I have no peer,
there is no God but me.
I arm you for battle, even though you do not recognize me.
Colossians 1:11
1:11 being strengthened with all power according to his glorious might for the display of
all patience and steadfastness, joyfully