John 5:12

"What man is that which said unto thee, Take up thy bed and walk? And he that was healed wist not who it was: for Jesus had conveyed Himself away, a multitude being in that place." And why did Jesus conceal Himself? First, that while He was absent, the testimony of the man might be unsuspected, for he who now felt himself whole was a credible witness of the benefit. And in the next place, that He might not cause the fury of the Jews to be yet more inflamed, for the very sight of one whom they envy is wont to kindle not a small spark in malicious persons. On this account He retired, and left the deed by itself to plead its cause among them, that He might not say anything in person respecting Himself, but that they might do so who had been healed, and with them also the accusers. Even these last for a while testify to the miracle, for they said not, "Wherefore hast thou commanded these things to be done on the Sabbath day?" but, "Wherefore doest thou these things on the Sabbath day?" not being displeased at the transgression, but envious at the restoration of the paralytic.

And he, in defence, put the author of his healing before his censors, saying, "He that made me whole, the same said unto me, Take up thy bed, and walk." Should I not take injunction from him from whom I received healing? And they said, "Who is the man that said unto thee, Take up thy bed, and walk?"