וְנֹחַ בֶּן שֵׁשׁ מֵאוֹת שָׁנָה וְהַמַּבּוּל הָיָה מַיִם עַל הָאָרֶץ
Noach was a man of 600 years when the Mabul came upon the earth.
_____
A person is the product of his experiences throughout the years of his life. He is affected physically and psychologically each day. Therefore he is called a child of his years.
A person is also a “child” of his personality as we see in the expression בן בליעל (Devarim 13:14).
A person is also a “child” of his punishments as we see in the expression בן הכות (Devarim 25:2).
Bearishis 7:6
page 193