John 5:16-18

For this reason the Jews began to persecute Jesus continually because He was doing these things on the Sabbath. But Jesus answered them, “My Father has been working until now [He has never ceased working], and I too am working.” 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.