Read these words which the Archangel St. Raphael spoke after his journey with Tobit:
Tobit 12:18-22
“As for me, when I was with you, I was not acting out of any favor on my part, but by God’s will. So bless God every day; give praise with song. 19 Even though you saw me eat and drink, I did not eat or drink anything; what you were seeing was a vision. 20 So now bless the Lord on earth and give thanks to God. Look, I am ascending to the one who sent me. Write down all that has happened to you.” And he ascended. 21 They stood up but were no longer able to see him. 22 They kept blessing God and singing his praises, and they continued to give thanks for these marvelous works that God had done, because an angel of God appeared to them.”
And some commentary from the Haydock Bible:
“. I. Greek, “I appeared to you all the days; yet I did not eat nor drink. But you beheld a vision.” (Haydock) — Having an aerial body, he made the provisions disappear, as the sun melts snow, Genesis xviii. 9. (Calmet) — He might swallow, though he had no need of meat, (St. Augustine, City of God xiii. 22.) or digestion, (Grotius) so as to convert it into his substance. (Menochius) — Men. I constantly enjoy the beatific vision, Matthew xviii. 10. (Calmet)”