A rebellious son? Hugo Odeberg and the interpretation of John 5:18

Hugo Odeberg offered a solution of how to interpret John 5.18 in his book "The Fourth Gospel Interpreted in its Relation to Contemporaneous Religious Currents in Palestine and the Hellenistic-Oriental World." It seems that the rabbinic phrase that Odeberg cites in a footnote is not to be found in any ancient rabbinic source. However, Odeberg's position concerning the significance of the phrase in an ancient context is accurate. In the text, the Jews accuse Jesus of being a rebellious son, and the Johannine Jesus denies the charge.