“he had seen an angel in his house” [Acts 11:13]

“he had seen an angel in his house” .Cornelius was a centurion in the Roman militia and outside the pale of those to whom angels might appear.
If it had not been that Peter had a vision, he would have written off Cornelius’ experience. But Peter had a vision as he fell into a trance and God gave him a thrice repeated instruction that cut right across his tradition about keeping Jewish ‘food-laws’.
Peter was sensible enough to listen and heed what God was saying and it was he who later related to the Apostles’ Committee in Jerusalem that Cornelius had an angel in his house. We are told that angels are ministering spirits, ministering to those who are heirs of salvation. When human agency fails, thank God for angels!