What does Genesis 6:16 mean?
Here, God concludes His very general instructions to Noah about how to build the ark. In the previous verses, Noah was instructed to make the ark about 450 feet (137 meters) long, 75 feet (23 meters) wide, and 45 feet (14 meters) high. This is based on the traditional length of a cubit, as the distance from the top of the finger to the elbow: approximately 18 inches (46 centimeters). For materials, Noah is told to use "gopher wood," which is an unknown material. Some scholars think this was either cedar or cypress.Now God tells Noah to construct a roof with an opening of about 1 cubit all the way around the top. In addition, the ark would have three decks and a single door on one side of it. This door would presumably need to be large enough to accommodate the entrance and exit of all the animals who would be making the voyage with Noah and his family. Once again, the details given here are not meant to tell us, the reader, how to construct our own ark. Rather, they are general summaries of the specific instructions given by God to Noah.