'Power' in the Bible

and every spirit which does not confess Jesus Christ come in flesh is not of God: and this is that power of the antichrist, of which ye have heard that it comes, and now it is already in the world.

We have the power of loving, because he first had love for us.

because This is the conquering power that has conquered the world: our faith.

We know that we are of God, and that the whole world lies in the power of the evil one.