Acts 1:10
"And while they looked stedfastly toward heaven as he went up, behold, two men stood by them in white apparel;"
Cross References (ranked by relevance)
And it came to pass, as they were much perplexed thereabout, behold, two men stood by them in shining garments:
And seeth two angels in white sitting, the one at the head, and the other at the feet, where the body of Jesus had lain.
And entering into the sepulchre, they saw a young man sitting on the right side, clothed in a long white garment; and they were affrighted.
And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb.
His countenance was like lightning, and his raiment white as snow:
I beheld till the thrones were cast down, and the Ancient of days did sit, whose garment was white as snow, and the hair of his head like the pure wool: his throne was like the fiery flame, and his wheels as burning fire.
And Cornelius said, Four days ago I was fasting until this hour; and at the ninth hour I prayed in my house, and, behold, a man stood before me in bright clothing,
And was transfigured before them: and his face did shine as the sun, and his raiment was white as the light.
Thou hast a few names even in Sardis which have not defiled their garments; and they shall walk with me in white: for they are worthy.
He saw in a vision evidently about the ninth hour of the day an angel of God coming in to him, and saying unto him, Cornelius.