Glossa Ordinaria

I will pour out. By this word he shows the bountifulness of the gift, because the Spirit was to be given not, as of old, to prophets and priests only, but to all persons everywhere, in either sex. Of the Spirit. He has regard to the diverse gifts when he says this, and not to a diminution of the substance. Upon all flesh. What all flesh is he sets forth consequently there: And the sons shall prophesy, etc. Upon all flesh of male and female, or of the circumcised and the heathen, according to that: There is not male and female, circumcision and uncircumcision, Barbarian and Scythian, slave and free. And they shall prophesy. The law and the prophets until John: from that time the kingdom is evangelized. But it is one thing to prophesy concerning Christ, another to foretell and to teach things to come.