NET
7 The Jewish leaders replied, “We have a law, and according to our law he ought to die, because he claimed to be the Son of God!”
Darby
7 The Jews answered him, We have a law, and according to [our] law he ought to die, because he made himself Son of God.
KJV
7 The Jews answered him, We have a law, and by our law he ought to die, because he made himself the Son of God.