John 5:10, 15, 18

So the Jews kept saying to the man who had been healed, “It is the Sabbath, and you are not permitted to pick up your pallet [because it is unlawful].”

The man went away and told the Jews that it was Jesus who had made him well.

This made the Jews more determined than ever to kill Him, for not only was He breaking the Sabbath [from their viewpoint], but He was also calling God His own Father, making Himself equal with God.