John 5:15

And this is the witness of John, when the Jews sent to him priests and Levites from Jerusalem to ask him, “Who are you?”

So the Jews were saying to the man who had been healed, “It is the Sabbath, and it is not lawful for you to carry your mat.”

And for this reason the Jews were persecuting Jesus, because He was doing these things on the Sabbath.

For this reason therefore the Jews were seeking all the more to kill Him, because He not only was breaking the Sabbath, but also was calling God His own Father, making Himself equal with God.