And how hear we every man in our own tongue, in which we were born?
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Peter's discourse below (2:37-41) shows that he does not seem to give a repetition in different languages successively, but rather an immediate understandng and acceptance by the whole crowd, and that they equally grasped the apostle's words in whatever language they may have been delivered.
Was it that the speakers expressed what they had to say in the diverse discourse of every language, or, when there were hearers of diverse nations, each of them would perceive what they heard in terms of his own language and would grasp the meaning of that one and the same discourse which had been uttered by the apostle? ...