Acts 6:6

“Whom they set before the apostles, etc.] They did not barely nominate and propose them to them, but they brought them into their presence, and placed them before them, as the persons whom they had chosen, in order to be ordained by them. And when they had prayed; for these seven men set before them, that they might appear to be richly qualified for this office, and might honourably and faithfully discharge it, to the peace of themselves, the advantage of the church, and the glory of God: they laid their hands on them; that is, they ordained them, they installed them into their office, and invested them with it, using the rite or ceremony of laying on of hands, which was used by the apostles…”

“when they had prayed, they laid their hands on them--the one proclaiming that all official gifts flowed from the Church's glorified Head, the other symbolizing the communication of these to the chosen office-bearers through the recognized channels.”

“And when they had prayed - Invoking in this manner the blessing of God to attend them in the discharge of the duties of their office. They laid their hands ... - Among the Jews it was customary to lay hands on the head of a person who was set apart to any particular office, Numbers 27:18; Compare Acts 8:19. This was done, not to impart any power or ability, but to “designate” that they received their authority or commission from those who thus laid their hands on them, as the act of laying hands on the sick by the Saviour was an act signifying that the power of healing came from him, Matthew 9:18; compare Mark 16:18. In such cases the laying on of the hands conveyed of itself no healing…”

“when: Act 1:24, Act 8:17, Act 9:17, Act 13:3; Ti1 4:14, Ti1 5:22; Ti2 1:6 Acts 6:7”