And he spake boldly in the name of the Lord Jesus, and disputed against the Grecians: but they went about to slay him.
Note 3 at Ac 9:29: As mentioned in note 2 at Ac 6:1, the term "Grecians" refers to Jews whose first language was Greek, as opposed to the Jews who spoke Hebrew. It is inconceivable that this would be referring to Gentiles. The New Testament church had not yet dealt with the issue of Gentiles becoming Christians, as can be seen by their reaction to the conversion of Cornelius (Ac 10:1-11:18). If these Grecians were Gentile believers, the confrontation Paul had with the apostles in Ac 15 would have been pointless.