Luke
Acts 11:13ESV·traditional attribution
And he told us how he had seen the angel stand in his house and say, ‘Send to Joppa and bring Simon who is called Peter;
Matthew Henry Presbyterian @wholebiblehenry
The preaching of the gospel to Cornelius was a thing which we poor sinners of the Gentiles have reason to reflect upon with a great deal of joy and thankfulness; for it was the bringing of light to us who sat in darkness.
Commenting on Acts 11:1-18
John Gill Reformed Baptist @doctorgill
And he showed us how he had seen an angel in his house,.... The clause, "in his house", is very appropriately put; for since an angel had entered into his house, it could not be criminal in Peter, and the six brethren, to follow him.
Jamieson-Fausset-Brown Reformed @jfbcommentary
seen an angel--literally, "the angel," for the rumor took that definite shape.