1. Now there was in Caesarea a certain man named Cornelius, a centurion of a band that is called the Italian band, 2. A devout man who also feared God with all his house, both in giving many alms to the people and in beseeching God continually in prayer. 3. He clearly saw in a vision, about the ninth hour of the day, an angel of God coming to him and saying to him, "Cornelius."
4. But as he fixed his eyes on him, he became afraid and said, "What is it, Lord?" And he said to him, "Your prayers and your alms have gone up for a memorial before God. 5. And now send men to Joppa, and call for Simon who is surnamed Peter. (Acts 10)
5. As a result, Peter was securely held in the prison, but fervent prayer was made to God by the church for him.7. But suddenly an angel of the Lord stood by him, and a light shined in the building. And after striking Peter on the side, he roused him, saying, "Get up! Hurry!" And the chains fell off his hands. (Acts 12)
looks like angels giving instructions from God to NT saints to me in these verses