THREE ANGELS AND ABRAHAM

"The three angels that appeared to Abraham (Gen. xviii.) were Michael, Gabriel, and Raphael; Michael, as the greatest, walked in the middle, with Gabriel to his right and Raphael to his left (Yoma 37a). Michael stands at the right hand of God, Gabriel at His left (Jellinek, ’B. H.’ v. 166). Throughout Jewish literature Michael appears as an angel of a higher degree, as may be seen in the passages quoted below. Gabriel has the form of a man (Dan. viii. 15, ix. 21), and is, according to the Talmud, the ’man clothed with linen’ mentioned in Ezek. ix. 3 and x. 2 (Yoma 77a)."

[Source: Jewish Encyclopedia]