Albert Barnes' Notes on the Whole Bible - Acts 2:16
This is that - This is the fulfillment of that, or this was predicted. This was the second part of Peter’s argument, to show that this was in accordance with the predictions in their own Scriptures.By the prophet Joel - Joel 2:28-32. This is not quoted literally, either from the Hebrew or the Septuagint. The substance, however, is preserved. read more
The Pulpit Commentary - Acts 2:14-36
The Spirit speaking through the voice of an apostle. Notice— I. The SIMPLICITY AND DIRECTNESS of the sermon; beginning with the facts of the present, going back to the facts of the past, and ending in the solemn appeal to enter the kingdom of Christ. II. The SCRIPTURAL AUTHORITY on which it rests. The ancient promise of Messiah; the glory of the latter days; the prophetic psalms;—thus showing that the unbelief of those who despised that day of grace was inexcusable. ... read more