{They laid their hands on them} (epeth(886b)an autois tas
cheiras). First aorist active indicative of epitith(886d)i.
Probably by the apostles who ratified the choice (verse  3 ). The
laying on of hands "was a symbol of the impartation of the gifts
and graces which they needed to qualify them for the office. It
was of the nature of a prayer that God would bestow the necessary
gifts, rather than a pledge that they were actually conferred"
(Hackett).