New Revised Standard Version
While he was going and they were gazing up toward heaven, suddenly two men in white robes stood by them.

Contemporary English Version
but as he went up, they kept looking up into the sky. Suddenly two men dressed in white clothes were standing there beside them.

New American Bible
While they were looking intently at the sky as he was going, suddenly two men dressed in white garments stood beside them.

Douay-Rheims Bible
And while they were beholding him going up to heaven, behold two men stood by them in white garments.

And while they were beholding him going up to heaven, behold two men stood by them in white garments.

while.

2 Kings 2:11,12 And as they went on, walking and talking together, behold, a fiery chariot and fiery horses parted them both asunder: and Elias went up by a whirlwind into heaven. . . .

two.

Acts 10:3,30 This man saw in a vision manifestly, about the ninth hour of the day, an angel of God coming in unto him and saying to him: Cornelius. . . .

Daniel 7:9 I beheld till thrones were placed, and the ancient of days sat: his garment was white as snow, and the hair of his head like clean wool: his throne like flames of fire: the wheels of it like a burning fire.

Matthew 17:2 And he was transfigured before them. And his face did shine as the sun: and his garments became white as snow.

Matthew 28:3 And his countenance was as lightning and his raiment as snow.

Mark 16:5 And entering into the sepulchre, they saw a young man sitting on the right side, clothed with a white robe: and they were astonished.

Luke 24:4 And it came to pass, as they were astonished in their mind at this, behold, two men stood by them, in shining apparel.

John 20:12 And she saw two angels in white, sitting, one at the head, and one at the feet, where the body of Jesus had been laid.

Revelation 3:4 But thou hast a few names in Sardis which have not defiled their garments: and they shall walk with me in white, because they are worthy.

Revelation 7:14 And I said to him: My Lord, thou knowest. And he said to me: These are they who are come out of great tribulation and have washed their robes and have made them white in the blood of the Lamb.