Albert Barnes Commentary Acts 10:8

"and having rehearsed all things unto them, he sent them to Joppa." — Acts 10:8 (ASV)

And when, etc. "It has been remarked that from Joppa Jonah was sent to preach to the Gentiles at Nineveh; and that from the same place Peter was sent to preach to the Gentiles at Caesarea." (Clarke.)