John 13:16

Verily, verily, I say unto you, A servant is not greater than his lord; neither one that is sent greater than he that sent him.

An expression similar to this was used by Jesus to show that his disciples would be hated and persecuted like himself (Matthew 10:24; John 15:20), and that the disciples of the Pharisees were as blind as their leaders (Luke 6:40). Tertullian made the words of this verse a mandate that no disciple might advocate a doctrine contrary to the teachings of the Lord, saying, "If Marcion be even a disciple, he is not yet `above his Master.'"[4] Here, Jesus taught that disciples should not hold themselves above performing menial tasks for each other.