“You shall make a bright item for the ark, and to a cubit you shall complete it at the top, and the entrance of the ark you shall place at its side; with lower, second-level, and third stories you shall craft it” (Genesis 6:15). “You shall make a bright item [tzohar] for the ark” – Rabbi Ḥunya, Rabbi Pinḥas, Rabbi Ḥanin, and Rabbi Hoshaya did not disagree about this. Rabbi Abba bar Kahana and Rabbi Levi did disagree.
Rabbi Abba bar Kahana said: It was a window. Rabbi Levi said: It was a [luminous] precious stone. Rabbi Pinḥas said in the name of Rabbi Levi: All twelve months that Noah was in the ark, he needed neither the light of the sun during the day nor the light of the moon at night; rather, he had a precious stone that he had suspended. When it was dim he knew that it was day, and when it shined brightly he knew that it was night.
Rabbi Huna said: We were once fleeing from enemy troops in a cave in Tiberias, and we had lamps with us. When they were dim, we knew that it was day, and when they shined brightly, we knew that it was night. “And to a cubit you shall complete it at the top” – Rabbi Yehuda and Rabbi Neḥemya, Rabbi Yehuda says: There were three hundred and sixty compartments in it [the ark], each one ten cubits by ten cubits,36They were arranged in rows of thirty compartments.
Since each compartment was a square of ten by ten cubits, the length of each row was three hundred cubits (the entire length of the ark), and its width was ten. There were four such rows, side by side, taking up a width of forty cubits. The remaining ten cubits of the ark’s width was taken up by aisles alongside the rows, as the Midrash goes on to describe. Altogether there were one hundred and twenty compartments in these four rows.
The same arrangement was followed for each of the three levels of the ark, for a total of three hundred and sixty. and two four-cubit aisles with chambers on one side and the other side, and again chambers on one side and the other side, and two cubits [for two additional aisles] on either side. Rabbi Neḥemya said: There were nine hundred compartments in it, each compartment being six cubits by six cubits,37According to Rabbi Neḥemya, each row consisted of fifty compartments, running along the entire length of the ark.
There were therefore six rows, taking up a total width of thirty-six cubits, with the remaining fourteen cubits of the ark’s width accounted for by aisles. Six rows of fifty compartments adds up to three hundred compartments, for each of the three levels. and three aisles, each four cubits, with chambers on one side and on the other side, and two cubits [for two additional aisles] on each of the sides.
According to the opinion of Rabbi Yehuda it is difficult38The phrase “and to a cubit you shall complete it at the top” implies that the roof was slanted, narrowing at the top, until it reached a width of one cubit. and according to the opinion of Rabbi Neḥemya it is difficult.39According to both opinions, there were equal numbers of compartments on each of the three levels. But if the roof of the ark narrowed towards the top, there would have to be fewer compartments on the top level.
Rabbi Yehuda and Rabbi Neḥemya, Rabbi Yehuda says: Like the cubit below, so was the cubit above – “and by the cubit you shall complete it at the top.”40The verse does not mean that the roof was slanted until it became just a cubit wide; rather, it means that the same cubit used for measuring the bottom of the ark should be used at its top. Rabbi Neḥemya said: It was [built] like a kind of vault41The roof’s incline was not angular, but arched, beginning near the top of the ark, so it did not diminish from the floor space on the top level. continuously inclining as it ascended, until it reached its single cubit, as it is stated: “and to a cubit…” “And the entrance of the ark you shall place at its side” – Rabbi Yitzḥak said: The Torah gives you instruction about practical matters: If a person builds a large room that is ten by ten cubits [or more], one should place its doorway entrance off to the side.42Not in the middle of the wall, so as not to diminish from the usable area of the room.
“Lower, second-level, and third stories you shall craft it” – the lower ones [compartments] were for refuse, the second-level ones were for him, his sons and the pure animals, and the upper ones were for the impure animals. Some exchange this: The lower ones were for the impure animals, the second-level ones for him, his sons and the pure animals, and the upper ones for the refuse. How would he do this?43Dispose of the refuse into the uppermost level.
There was a partitioned opening and he would sweep it to the side.44So it should not fall down to the level below. “You shall craft it [taaseha]” – it [the ark], too, assisted [in building] itself.45Taaseha is expounded as though it was written as te’aseh, it shall become made. The construction of the ark was too much for any person to accomplish, so there was a miraculous element in its building, as if the ark itself assisted in its own construction.