John Gill Commentary Genesis 6:10

"And Noah begat three sons, Shem, Ham, and Japheth." — Genesis 6:10 (ASV)

And Noah begat three sons, Shem, Ham, and Japheth .
When he was five hundred years of age, and before the flood came upon the earth; and when it was so wicked as is next described: of these sons of his, and of the order in which they are placed, (See Gill on Genesis 5:32).