Acts 2:14 “You who are Jews, indeed all of you staying in Jerusalem. -- Peter was speaking to Jews and to gentiles.
The chapter starts with 5 And there were dwelling at Jerusalem Jews, devout men, out of every nation under heaven -- out of every nation
It carries on and says they are 9 Parthians, and Medes, and Elamites, and the dwellers in Mesopotamia, and in Judæa, and Cappadocia, in Pontus, and Asia, 10 Phrygia, and Pamphylia, in Egypt, and in the parts of Libya about Cyrene, and strangers of Rome, Jews and proselytes
5 Now there were devout Jews from every nation under heaven staying in Jerusalem.
https://bible.usccb.org/bible/acts/2