Genesis 7:6
And Noah was six hundred years old when the flood of waters was upon the earth.
Cross-references
Genesis 5:32
Historical context
In Genesis 5:32, Noah was 500 when he fathered Shem, Ham, and Japheth — here he is 600 at the flood, showing 100 years passed.
Genesis 8:13
Historical context
In Genesis 8:13, Noah is 601 when the ground dries — this verse gives his age when the flood began, marking the timeline.