ST. PAUL'S FIRST LETTER TO THE CORINTHIANS 14:6-19
Brethren, if I come to you speaking in tongues, how shall I benefit you unless I bring you some revelation or knowledge or prophecy or teaching? If even lifeless instruments, such as the flute or the harp, do not give distinct notes, how will any one know what is played? And if the bugle gives an indistinct sound, who will get ready for battle? So with yourselves; if you in a tongue utter speech that is not intelligible, how will any one know what is said? For you will be speaking into the air. There are doubtless many different languages in the world, and none is without meaning; but if I do not know the meaning of the language, I shall be a foreigner to the speaker and the speaker a foreigner to me. So with yourselves; since you are eager for manifestations of the Spirit, strive to excell in building up the church. Therefore, he who speaks in a tongue should pray for the power to interpret. For if I pray in a tongue, my spirit prays but my mind is unfruitful. What am I to do? I will pray with spirit and I will sing with the mind also. Otherwise, if you bless with the spirit, how can any one in the position of an outsider say the "Amen" to your thanksgiving when he does not know what you are saying? For you may give thanks well enough, but the other man is not edified. I thank God that I speak in tongues more than you all; nevertheless, in church I would rather speak five words with my mind, in order to instruct others, than ten thousand words in a tongue.
At that time, as Jesus was going up to Jerusalem, he took the twelve disciples aside, and on the way he said to them, "Behold, we are going up to Jerusalem; and the Son of man will be delivered to the chief priests and scribes, and they will condemn him to death, and deliver him to the Gentiles to be mocked and scourged and crucified, and he will be raised on the third day.
Then the mother of the sons of Zebedee came up to him, with her sons, and kneeling before him she asked him for something. And he said to her, "What do you want?" She said to him, "Command that these two sons of mine may sit, one at your right hand and one at your left, in your kingdom." But Jesus answered, "You do not know what you are asking. Are you able to drink the cup that I am to drink?" They said to him, "We are able." He said to them, "You will drink my cup, but to sit at my right hand and at my left is not mine to grant, but it is for those for whom it has been prepared by my Father." And when the ten heard it, they were indignant at the two brothers. But Jesus called them to him and said, "You know that the rulers of the Gentiles lord it over them, and their great men exercise authority over them. It shall not be so among you; but whoever would be great among you must be your servant, and whoever would be first among you must be your slave; even as the Son of man came not to be served but to serve, and to give his life as a ransom for many.