First, look for Acts 1 or 2, when a successor to Judas is chosen…and Matthias is chosen. In Acts 13, Paul and Barnabas are ordained, or laid hands on…prior to going to their first missionary journey…so they are “sent”…with the HS acting through the “elders” of the Church at Antioch. By the way, as a side note, do you know who founded the Church at Antioch?
Also, look at the 1st epistle of clement of rome, where he writes…
earlychristianwritings.com/text/1clement-roberts.html
And thus preaching through countries and cities, they appointed the first-fruits [of their labours], having first proved them by the Spirit, to be bishops and deacons of those who should afterwards believe. Nor was this any new thing, since indeed many ages before it was written concerning bishops and deacons. For thus says the Scripture a certain place, “I will appoint their bishops s in righteousness, and their deacons in faith.”
Our apostles also knew, through our Lord Jesus Christ, and there would be strife on account of the office of the episcopate. For this reason, therefore, inasmuch as they had obtained a perfect fore-knowledge of this, they appointed those [ministers] already mentioned, and afterwards gave instructions, that when these should fall asleep, other approved men should succeed them in their ministry.
And St. Ireneus…appealed to Apostolic succession…to defeat Gnosticism…(ask your friend if St. Ireneus was dreaming something up, in his writings against the heresy of Gnosticism)…
St. Irenaeus explains how the Apostolic Tradition was to be found, to whom it was entrusted, and how it was preserved:
calledtocommunion.com/2009/07/ecclesial-deism/
The Gnostics of the second century justified being separated from the Catholic Church by claiming that even the Apostles had perverted Christ’s teachings. St. Irenaeus (d. AD 200) writes:
But, again, when we refer [the heretics] to that tradition which originates from the apostles, [and] which is preserved by means of the succession of presbyters in the Churches, they object to tradition, saying that they themselves are wiser not merely than the presbyters, but even than the apostles, because they have discovered the unadulterated truth. For [they maintain] that the apostles intermingled the things of the law with the words of the Saviour; . . . It comes to this, therefore, that these men do now consent neither to Scripture nor to tradition.10
It is within the power of all, therefore, in every Church, who may wish to see the truth, to contemplate clearly the tradition of the apostles manifested throughout the whole world; and we are in a position to reckon up those who were by the apostles instituted bishops in the Churches, and [to demonstrate] the succession of these men to our own times; those who neither taught nor knew of anything like what these [heretics] rave about. For if the apostles had known hidden mysteries, which they were in the habit of imparting to “the perfect” apart and privily from the rest, they would have delivered them especially to those to whom they were also committing the Churches themselves. For they were desirous that these men should be very perfect and blameless in all things, whom also they were leaving behind as their successors, delivering up their own place of government to these men; which men, if they discharged their functions honestly, would be a great boon [to the Church], but if they should fall away, the direst calamity.
Since, however, it would be very tedious, in such a volume as this, to reckon up the successions of all the Churches, we do put to confusion all those who, in whatever manner, whether by an evil self-pleasing, by vainglory, or by blindness and perverse opinion, assemble in unauthorized meetings; [we do this, I say,] by indicating that tradition derived from the apostles, of the very great, the very ancient, and universally known Church founded and organized at Rome by the two most glorious apostles, Peter and Paul; as also [by pointing out] the faith preached to men, which comes down to our time by means of the successions of the bishops. For it is a matter of necessity that every Church should agree with this Church, on account of its preeminent authority, that is, the faithful everywhere, inasmuch as the tradition has been preserved continuously by those [faithful men] who exist everywhere.43