John 2:20-25

20Then said the Jews, Forty and six years was this temple in building, and wilt thou raise it up in three days? 21But he spoke of the temple of his body. 22When therefore he had risen from the dead, his disciples remembered that he had said this to them; and they believed the scripture, and the word which Jesus had spoken.

23Now when he was in Jerusalem at the passover, in the feast day, many believed in his name, when they saw the miracles which he did. 24But Jesus did not commit himself to them, because he knew all men, 25And needed not that any should testify concerning man: for he knew what was in man.