John 5:10-18 NRSV
So the Jews said to the man who had been cured, “It is the sabbath; it is not lawful for you to carry your mat.” But he answered them, “The man who made me well said to me, ‘Take up your mat and walk.’ ” They asked him, “Who is the man who said to you, ‘Take it up and walk’?” Now the man who had been healed did not know who it was, for Jesus had disappeared in the crowd that was there. Later Jesus found him in the temple and said to him, “See, you have been made well! Do not sin any more, so that nothing worse happens to you.” The man went away and told the Jews that it was Jesus who had made him well. Therefore the Jews started persecuting Jesus, because he was doing such things on the sabbath. But Jesus answered them, “My Father is still working, and I also am working.” For this reason the Jews were seeking all the more to kill him, because he was not only breaking the sabbath, but was also calling God his own Father, thereby making himself equal to God.