The biblical texts have already been given so I won’t dwell on those. I just want to add that the early church believed in ordination, and the only thing that can be wrong about ordination, are the views of the later cults and heretics who deny its divine power.
Clement of Rome
*Our Apostles knew through our Lord Jesus Christ that there would be strife for the office of bishop. For this reason, therefore, having received perfect foreknowledge, they appointed those who have already been mentioned, and afterwards added the further provision that, if they should die, other approved men should succeed to their ministry (Letter to the Corinthians 44:1 [A.D. 95]). *
Clement of Alexandria
After the death of the tyrant, the [Apostle John] came back again to Ephesus from the Island of Patmos; and, upon being invited, he went even to the neighboring cities of the pagans, here to appoint bishops, there to set in order whole Churches, and there to ordain to the clerical estate such as were designated by the Spirit (Who is the Rich Man that is Saved? 42:2 [inter 190-210 A.D.]).