Mark 9:31-37

because He was teaching His disciples [and preparing them for the future]. He told them, “The Son of Man is to be betrayed and handed over to men [who are His enemies], and they will kill Him; and when He has been killed, He will rise [from the dead] three days later.” But they did not understand this statement, and they were afraid to ask Him [what He meant]. They arrived at Capernaum; and when He was in the house, He asked them, “What were you discussing and arguing about on the road?” [Matt 18:1-5; Luke 9:46-48] But they kept quiet, because on the road they had discussed and debated with one another which one [of them] was the greatest. Sitting down [to teach], He called the twelve [disciples] and said to them, “If anyone wants to be first, he must be last of all [in importance] and a servant of all.” Taking a child, He set him before them; and taking him in His arms, He said to them, “Whoever receives and welcomes one child such as this in My name receives Me; and whoever receives Me receives not [only] Me, but Him who sent Me.” [Matt 10:40; Luke 10:16; John 13:20]