'Strength' in the Bible

If anyone has anything to say, let it be as the words of God; if anyone has the desire to be the servant of others, let him do it in the strength which is given by God; so that in all things God may have the glory through Jesus Christ, whose are the glory and the power for ever.

And after you have undergone pain for a little time, the God of all grace who has given you a part in his eternal glory through Christ Jesus, will himself give you strength and support, and make you complete in every good thing;