Jesus did a lot of miracles in the course of two days, things that man could do only with God's help. In fact, some of the Old Testament prophets did similar things, with God's help.
It is at the end of the chapter, that he does something only God can
Jesus wants to remind us that performing a series of religious acts doesn't make us right with God. Our attitude matters. What the Bible calls "the heart." While men look at the outside, God looks at the heart.