John Wesley on Acts 13:2

Separate me Barnabas and Saul for the work to which I have called them - This was not ordaining them. St. Paul was ordained long before, and that not of men, neither by man: it was only inducting him to the province for which our Lord had appointed him from the beginning, and which was now revealed to the prophets and teachers. In consequence of this they fasted, prayed, and laid their hands on them, a rite which was used not in ordination only, but in blessing, and on many other occasions.