Mark 9:33–37 (NKJV) 33 Then He came to Capernaum. And when He was in the house He asked them, “What was it you disputed among yourselves on the road?” 34 But they kept silent, for on the road they had disputed among themselves who would be the greatest. 35 And He sat down, called the twelve, and said to them, “If anyone desires to be first, he shall be last of all and servant of all.” 36 Then He took a little child and set him in the midst of them. And when He had taken him in His arms, He said to them, 37 “Whoever receives one of these little children in My name receives Me; and whoever receives Me, receives not Me but Him who sent Me.”
Luke 22:24–27 (NKJV) 24 Now there was also a dispute among them, as to which of them should be considered the greatest. 25 And He said to them, “The kings of the Gentiles exercise lordship over them, and those who exercise authority over them are called ‘benefactors.’ 26 But not so among you; on the contrary, he who is greatest among you, let him be as the younger, and he who governs as he who serves. 27 For who is greater, he who sits at the table, or he who serves? Is it not he who sits at the table? Yet I am among you as the One who serves.
