In John 3:1-21, Nicodemus, a member of the Jewish ruling council (the Sanhedrin) came to Jesus at night. He didn’t approach him during the day when crowds of people surrounded him. He went at night, when people were sleeping and when it would be unlikely that anyone else on the council would know what he was doing.
This man came to Jesus by night and said to Him, “Rabbi, we know that You are a teacher come from God; for no one can do these signs that You do unless God is with him” (John 3:2, NKJV).
And how does Jesus respond? He changes the topic.