“For to you is the promise, and to your children, and to all that are afar off, even as many as the Lord our God shall call to him.”
Peter then reminds them that what he is declaring is what God had already promised them and speaks in such a way as to remind them of Isaiah's prophecies. The promise is to them, and to their children, and to all who are afar off. These words echo the prophets (Isaiah 33:13; Isaiah 57:19; Ezekiel 11:6; Joel 3:8; Micah 4:7; Zechariah 6:15 - the Jews scattered around the world - but compare Ephesians 2:13). To Peter at this time ‘afar off' referred to the Jewish dispersion. To Luke, however, it meant all peoples (Acts 22:21).