Acts 1:10

as he went up The preposition is not in the Greek, which has simply, as he went.

in white apparel They are called men, but they are evidently angels. So the two angels are clothed in white (John 20:12) whom Mary saw in the sepulchre after the Resurrection, and one of these is called by St Mark (Mark 16:5) "a young manclothed in a long white garment." St Luke in the Gospel calls them "two men in shining garments" (Acts 24:4). So the "man in bright clothing," Acts 10:30, is described in Acts 11:13 as "an angel." This was a common Jewish expression to signify angelic or divine messengers. Cf. Talm. Jer. JomaActs 1:2, ad fin.

"Shimeon ha-Tsaddik (i.e. the righteous) served Israel forty years in the High-priesthood, and in the last year he said to the people, -In this year I shall die." They said to him: -How dost thou know this?" He said to them: -Every year when I was going into the Holy of Holies there was an Ancient one, clad in white garments and with a white vail, who went in with me and came out with me; but this year he went in with me and did not come out with me." [On this matter] they asked of Rabbi Abuhu, -But surely it is written: -Nothing of mankind shall be in the tent of meeting when he [the High-priest] goes in to make atonement until his coming out again," not even those concerning whom it is written [Ezekiel 1:5] -They had the likeness of a man," even they shall not be in the tent of meeting." He said to them: -What is there [in this language of Shimeon] to tell me that it was a human being at all? I say it was the Holy One."