Genesis 6:16
A window shalt thou make to the ark, and in a cubit shalt thou finish it above; and the door of the ark shalt thou set in the side thereof; with lower, second, and third stories shalt thou make it.
Cross-reference
Genesis 8:6
Parallel
In Genesis 8:6, Noah opens the window he built in the ark — the same 'window' commanded here, now used to see the receding floodwaters.