Moses
Genesis 6:16ESV·traditional attribution

Make a roof for the ark, and finish it to a cubit above, and set the door of the ark in its side. Make it with lower, second, and third decks.

Matthew Henry Presbyterian @wholebiblehenry

Here it appears indeed that Noah found grace in the eyes of the Lord. God's favour to him was plainly intimated in what he said of him, Gen 6:8-10, where his name is mentioned five times in five lines, when once might have served to make the sense clear, as if the Holy Ghost took a pleasure in perpetuating his memory; but it appears much...

Commenting on Genesis 6:13-21

John Gill Reformed Baptist @doctorgill

But with thee will I establish my covenant,.... Made with Noah at this time, though not expressed, that on his making an ark, as God directed him, and going into it at his command, he would preserve him while building it from the rage of wicked men, and save him in it and his family, when the flood should come; and that they should come...

Jamieson-Fausset-Brown Reformed @jfbcommentary

A window--probably a skylight, formed of some transparent substance unknown. in a cubit shalt thou finish it above--a direction to raise the roof in the middle, seemingly to form a gentle slope for letting the water run off.