Luke 6:40
"The disciple is not above his master: but every one that is perfect shall be as his master."
Cross References (ranked by relevance)
John 13:16
17
Verily, verily, I say unto you, The servant is not greater than his lord; neither he that is sent greater than he that sent him.
John 15:20
Remember the word that I said unto you, The servant is not greater than his lord. If they have persecuted me, they will also persecute you; if they have kept my saying, they will keep yours also.
Matthew 23:15
Woe unto you, scribes and Pharisees, hypocrites! for ye compass sea and land to make one proselyte, and when he is made, ye make him twofold more the child of hell than yourselves.