Because of this, the Jews tried all the harder to kill Him. Not only was He breaking the Sabbath, but He was even calling God His own Father, making Himself equal with God.

John 1:19
And this was John's testimony when the Jews of Jerusalem sent priests and Levites to ask him, "Who are you?"

John 5:15
And the man went away and told the Jews that it was Jesus who had made him well.

John 5:16
Now because Jesus was doing these things on the Sabbath, the Jews began to persecute Him.

John 5:17
But Jesus answered them, "To this very day My Father is at His work, and I too am working."

John 7:1
After this, Jesus traveled throughout Galilee. He did not want to travel in Judea, because the Jews there were trying to kill Him.

John 10:33
"We are not stoning You for any good work," said the Jews, "but for blasphemy, because You, who are a man, declare Yourself to be God."

John 19:7
"We have a law," answered the Jews, "and according to that law He must die, because He declared Himself to be the Son of God."

Philippians 2:6
Who, existing in the form of God, did not consider equality with God something to be grasped,

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.