The cubit is an ancient unit of length based on the distance from the elbow to the tip of the middle finger. It was primarily associated with the Sumerians, Egyptians, and Israelites. The term cubit is found in the Bible regarding Noah's Ark, the Ark of the Covenant, the Tabernacle, and Solomon's Temple. The common cubit was divided into 6 palms × 4 fingers = 24 digits. Royal cubits added a palm for 7 palms × 4 fingers = 28 digits. These lengths typically ranged from 44.4 to 52.92 cm, with an ancient Roman cubit being as long as 120 cm.

The Ark of the Covenant, also known as the Ark of the Testimony or the Ark of God, is believed to have been the most sacred religious relic of the Israelites. It is described as a wooden chest coated in pure gold and topped off by an elaborate golden lid known as the mercy seat. According to the Book of Exodus and First Book of Kings in the Hebrew Bible and the Old Testament, the Ark contained the Tablets of the Law, by which God delivered the Ten Commandments to Moses at Mount Sinai. According to the Book of Exodus, the Book of Numbers, and the Epistle to the Hebrews in the New Testament, it also contained Aaron's rod and a pot of manna.