Luke
Acts 2:39ESV·traditional attribution

For the promise is for you and for your children and for all who are far off, everyone whom the Lord our God calls to himself.”

John Calvin Reformed @genevareformer

39. For the promise appertaineth unto you. It was requisite that this should be expressly added, that the Jews might certainly think and persuade themselves that the grace of Christ did belong as well to them as to the apostles. And Peter proveth it thus, because the promise of God was made unto them.

Matthew Henry Presbyterian @wholebiblehenry

We have seen the wonderful effect of the pouring out of the Spirit, in its influence upon the preachers of the gospel. Peter, in all his life, never spoke at the rate that he had done now, with such fulness, perspicuity, and power. We are now to see another blessed fruit of the pouring out of the Spirit in its influence upon the hearers of the gospel.

Commenting on Acts 2:37-41

John Gill Reformed Baptist @doctorgill

And with many other words did he testify and exhort,.... For Luke does not give the sermons of the apostles at length, but a compendium, or specimen of them, and some of the more remarkable things in them; and which, it seems, lay partly in testifying concerning Christ, his person, office, grace, righteousness, and salvation; and against sins and errors, and false doctrine; and in...