Jesus promised the same Apostles the Holy Spirit to teach them all truth (XVI, 13), and to abide with them forever" (XIV, 16).
6. St. Matthew, in the concluding verses of his Gospel, describes the important event of their mission in words which leave no doubt as to its character: "And the eleven disciples went into Galilee, unto the mountain where Jesus had appointed them. . . And Jesus, coming, spoke to them, saying, 'all power is given Me in Heaven and in earth: going, therefore, teach ye all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: teaching them to observe all things whatsoever I have commanded you: and behold I am with you all days, even to the consummation of the world'." As the Apostles were not destined to live to the end of time, this assurance, like the promise cited in n. 5, was not limited to them personally, but was meant for the indefectible teaching organization of which they were the beginning.
7. St. Mark, in his concluding verses, narrates briefly the facts of the same mission of the eleven, and adds the promise of miraculous power; he then exhibits them entering on their mission: "But they going forth preached everywhere, the Lord working withal, and confirming the word with signs that followed."
44. After the Ascension of Christ into Heaven, we find the same eleven disciples mentioned again by name in the Acts (I, 13) as forming a select band, which is to be completed, before the descent of the Holy Ghost, by the choice of a substitute for Judas. They appoint two, but leave the choice to God, saying: "Thou, Lord, who knowest the hearts of all men, show whether of these two Thou hast chosen to take the place of this ministry
