For this cause therefore the Jews sought all the more to kill him, because he not only broke the Sabbath, but also called God his own Father, making himself equal with God.

 This is an amazing passage, because it is woven together of thoughts and expressions which are all claims by Jesus to be the promised Messiah. Many of these claims we do not now readily see, but they would be crystal clear to the Jews and would leave them aghast. 