'Mighty Deeds' in the Bible

And when the sabbath came, he began to teach in the synagogue. And many that heard him were astonished, and said: Whence has this man these things? and what wisdom is this which is given to him, that even such mighty deeds are done by his hands?

He could not do any mighty deeds there, except that He put His hands on a few ailing people and cured them.