Luke 9:29

And as he prayed, the fashion of his countenance was altered, and his raiment was white and glistering.
— Luke 9:29, King James Version

In other translations

World English Bible (WEB)

As he was praying, the appearance of his face was altered, and his clothing became white and dazzling.

American Standard Version (ASV)

And as he was praying, the fashion of his countenance was altered, and his raiment became white and dazzling.

Young's Literal Translation (YLT)

and it came to pass, in his praying, the appearance of his face became altered, and his garment white--sparkling.