They show that such prayers had long been made by Cornelius. Speaking in a manner adapted to men, God remembered their multitude and long continuance. He likewise remembered his alms, which also were great.
"See where prayer goes," says blessed Theophylact, "to the highest heaven, where it stands before the royal throne. Notice the angel as well. First he lifts and raises the thoughts of Cornelius to higher things.
"Only then does he say, 'Send men to Joppa.' Since the true Eye and great Judge knows that even great works without faith are dead, He sends the angel. The angel confirms the value of their works, so that those who strive well may be crowned by faith.
"Cornelius sees the angel for the strengthening of Peter's faith, or rather, not for him, but for others weaker in faith."
God, so to speak, remembered Cornelius as a man now able to receive recompense for his struggles, prayers, and alms. At the same time, he could serve the salvation of many in Christ Jesus.
And so, by God's command, an angel appeared to him. The angel strengthened him and showed him what he must do next, so that he, his household, and through them many others might be saved.