John 5:18

Overview - John 5
1	Jesus on the sabbath day cures him that was diseased eight and thirty years.
10	The Jews therefore cavil, and persecute him for it.
17	He answers for himself, and reproves them, shewing by the testimony of his Father,
31	of John,
36	of his works,
39	and of the scriptures, who he is.

John 5:18  (King James Version)
Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.