Acts 2:18 - Ellicott's Commentary On The Whole Bible

And on my servants and on my handmaidens... — This was the culminating point of the joyous prediction. Not on priests only, or those who had been trained in the schools of the prophets, but on slaves, male and female, should that gift be poured by Him who was no respecter of persons. The life of Amos, the herdsman of Tekoa, the “gatherer of sycomore fruit” (Amos 1:1; Amos 7:14), was, perhaps, the earliest example of the gift so bestowed. The apostolic age must have witnessed many. The fisherman of Galilee, who was now speaking, was the forerunner of thousands in whom the teaching of the Spirit has superseded the training of the schools.