And all the men were about twelve.

People's New Testament

19:7 All the men were about twelve. Thus these men appear in this episode and then disappear from our knowledge. They were now endowed for usefulness, and perhaps did great service in the religious revolution that soon transformed all that part of Asia.

Matthew Henry's Concise Commentary

19:1-7 Paul, at Ephesus, found some religious persons, who looked to Jesus as the Messiah. They had not been led to expect the miraculous powers of the Holy Ghost, nor were they informed that the gospel was especially the ministration of the Spirit. But they spake as ready to welcome the notice of it. Paul shows them that John never design that those he baptized should rest there, but told them that they should believe on Him who should come after him, that is, on Christ Jesus. They thankfully accepted the discovery, and were baptized in the name of the Lord Jesus. The Holy Ghost came upon them in a surprising, overpowering manner; they spake with tongues, and prophesied, as the apostles and the first Gentile coverts did. Though we do not now expect miraculous powers, yet all who profess to be disciples of Christ, should be called on to examine whether they have received the seal of the Holy Ghost, in his sanctifying influences, to the sincerity of their faith. Many seem not to have heard that there is a Holy Ghost, and many deem all that is spoken concerning his graces and comforts, to be delusion. Of such it may properly be inquired, Unto what, then, were ye baptized? for they evidently know not the meaning of that outward sign on which they place great dependence.