Luke
Acts 11:13BSB·traditional attribution

He told us how he had seen an angel standing in his house and saying, ‘Send to Joppa for 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.