And in those days Peter stood up in the midst of the disciples, and said, (the number of names together were about an hundred and twenty,)
And in these days Peter stood up in the midst of the disciples - `in the midst of the brethren' х toon (G3588) adelfoon (G80)] is the true reading here.
And said - now assuming that leading position among the apostles to which he had all along been destined (see the note at John 1:42, and at Matthew 16:18-19). But for the beautiful reconciliation which took place in the presence of all the rest (John 21:15-17), he could not have ventured on such a step, nor could the others have deemed it quite seemly. But that scene-and perhaps others unrecorded-would pave the way for what he now did, and for which all in the upper room seem to have been quite prepared.
The number of names - that is, of persons, as in Revelation 3:4.
Together, х epi (G1909) to (G3588) auto (G846)] - not 'in all,' but 'in the same place,' or 'met together' (as the same phrase means in Acts 2:1; Acts 2:44; Acts 3:1; Acts 14:1; Luke 17:35).
Were about an hundred and twenty. Many, therefore, of the "five hundred brethren" who saw their risen Lord "at once" in Galilee (1 Corinthians 15:6) must have continued there: the number here, mentioned including only as many as were congregated with the eleven in the upper room, awaiting the promised descent of the Spirit.