John 15:20 directly cites Jesus' earlier saying that the servant is not greater than his lord — a clear repetition.

John 12:26 expands on service: the servant follows the master and is honored by the Father – directly reinforces and applies the principle.

In John 15:15, Jesus redefines the relationship from servant to friend – contrasting with the servant status in John 13:16.

Matthew 10:24 has the same proverb about disciple not above master, a parallel saying from Jesus' teaching.

In Matthew 10:25, Jesus applies the same servant-master principle to persecution: if the master is called Beelzebul, so too his servants.

Luke 6:40 extends the principle: the student is not above the teacher, but fully trained will be like the teacher – focusing on discipleship formation.