While he was going away and as they were staring toward heaven, suddenly two men in white robes stood next to them.
And while they looked stedfastly toward heaven as he went up, behold, two men stood by them in white apparel;
And while they were gazing intently into heaven as He went, behold, two men [dressed] in white robes suddenly stood beside them,
And while they were looking stedfastly into heaven as he went, behold two men stood by them in white apparel;
And while they were watching him going up to heaven, behold, two men stood near them in white vestments.
And while they were beholding him going up to heaven, behold two men stood by them in white garments.