Treasury of Scripture Knowledge

Summary

And this is the fashion which thou shalt make it of: The length of the ark shall be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.

Bible References

Cubits

Genesis 7:20
The waters rose and covered the mountains to a depth of more than twenty feet.
Deuteronomy 3:11
Of the Rephaim only King Og of Bashan was left. His bed was made of iron and was more than thirteen feet long and six feet wide. It is still in the Ammonite city of Rabbah.