Their wonder might have led them to infer, that our Lord became possessed of this learning in some divine way, and not by any human process. But they would not acknowledge this, and contented themselves with wondering. So our Lord repeated it to them: Jesus answered them and said, My doctrine is not Mine, but His that sent Me.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. xlix. 1