'Power' in the Bible

and to you who are troubled -- rest with us in the revelation of the Lord Jesus from heaven, with messengers of his power,

for which also we do pray always for you, that our God may count you worthy of the calling, and may fulfil all the good pleasure of goodness, and the work of the faith in power,

him, whose presence is according to the working of the Adversary, in all power, and signs, and lying wonders,