Acts 1:10

And while they looked stedfastly toward heaven as he went up, behold, two men stood by them in white apparel;
— Acts 1:10, King James Version

In other translations

World English Bible (WEB)

While they were looking steadfastly into the sky as he went, behold, two men stood by them in white clothing,

American Standard Version (ASV)

And while they were looking stedfastly into heaven as he went, behold two men stood by them in white apparel;

Young's Literal Translation (YLT)

and as they were looking stedfastly to the heaven in his going on, then, lo, two men stood by them in white apparel,