Cubit
What Was a Cubit?
The cubit was the primary unit of linear measurement used throughout the ancient Near East, including Israel, Egypt, and Mesopotamia. The word comes from the Latin cubitum ("elbow"), and the measurement was originally based on the length of the forearm from the elbow to the tip of the middle finger. Deuteronomy 3:11 refers to this natural measurement as "the cubit of a man," distinguishing it from more standardized versions that developed over time.
Because forearm lengths vary from person to person, the Babylonians developed a more precise standard that spread throughout the ancient world. Two standards emerged: an ordinary cubit used in everyday commerce and a longer royal cubit used for official construction and measurement.
How Long Was a Cubit?
Determining the exact length of a biblical cubit has been a subject of scholarly discussion for centuries. The ordinary cubit is generally estimated at approximately 17.5 to 18 inches (44.5 to 45.7 centimeters), based on evidence from the Siloam Tunnel inscription and measurements of ancient tombs in Palestine. The royal or "long" cubit, used in Mesopotamia and Egypt, measured approximately 20.5 to 20.6 inches (52 to 52.3 centimeters).
Ezekiel mentions this longer measurement when describing his visionary temple, defining his cubit as "a cubit and a handbreadth" (Ezekiel 40:5; 43:13), meaning the standard cubit plus an additional palm's width. Solomon's temple may also have used this longer cubit, as 2 Chronicles 3:3 specifies that the measurements followed "cubits of the old standard," possibly referring to the ancient royal cubit.
A third, shorter cubit is implied in Judges 3:16, where Ehud's sword, described using a different Hebrew word, was short enough to be concealed under his clothing on his thigh.
The Cubit in Major Biblical Structures
The cubit provides the measurements for the most important structures in Scripture:
Noah's Ark was 300 cubits long, 50 cubits wide, and 30 cubits high (Genesis 6:15), making it approximately 450 feet long, 75 feet wide, and 45 feet high by the ordinary cubit.
The Tabernacle court was 100 cubits long and 50 cubits wide (Exodus 27:18). The Most Holy Place was a 10-cubit cube (Exodus 26:16-23). Every detail of the sacred furniture was specified in cubits and fractions thereof.
Solomon's Temple was 60 cubits long, 20 cubits wide, and 30 cubits high (1 Kings 6:2). The inner sanctuary was a 20-cubit cube (1 Kings 6:20). These precise measurements reflected the theological importance of sacred space.
Ezekiel's Visionary Temple is described with extraordinary dimensional detail throughout Ezekiel 40-48, using the long cubit of a cubit and a handbreadth.
The New Jerusalem in Revelation has a wall measuring 144 cubits (Revelation 21:17), though the overall dimensions of the city are given in stadia.
The Cubit as a Metaphor
Jesus used the cubit metaphorically in His Sermon on the Mount: "And which of you by being anxious can add a single cubit to his span of life?" (Matthew 6:27; Luke 12:25). While some translations render this as adding to one's height, the context of anxiety about life and its length suggests Jesus was speaking about the futility of worry in extending one's lifespan. Either way, the point is clear: the smallest unit of measurement is beyond human control when it comes to the fundamental realities of life.
The Cubit and Six Palms
The ordinary cubit was subdivided into six palms (handbreadths), with each palm containing four fingers. This gave the cubit a total of twenty-four finger-widths. The long cubit added a seventh palm, giving it twenty-eight finger-widths. These subdivisions allowed for precise measurements in construction and commerce, forming a comprehensive system of measurement that served the ancient world for millennia.
Biblical Context
The cubit appears throughout the Bible as the primary unit of measurement. Key passages include the dimensions of Noah's ark (Genesis 6:15), the tabernacle (Exodus 25-27), Solomon's temple (1 Kings 6), Ezekiel's temple vision (Ezekiel 40-48), Goliath's height at six cubits and a span (1 Samuel 17:4), and Jesus' teaching on worry (Matthew 6:27). Revelation 21:17 uses the cubit for the wall of the New Jerusalem.
Theological Significance
The detailed cubit measurements in Scripture reflect God's concern for order, precision, and sacred space. The exact dimensions of the tabernacle and temple were not left to human creativity but were divinely specified, emphasizing that God determines how He is to be approached and worshipped. Jesus' metaphorical use of the cubit teaches that the most fundamental aspects of life are under God's control, not ours. The progression from tabernacle to temple to Ezekiel's vision to the New Jerusalem traces God's expanding dwelling with His people.
Historical Background
The cubit system originated in Mesopotamia and was adopted throughout the ancient Near East. Egyptian royal cubits, preserved on measuring rods found in tombs, confirm the approximately 20.5-inch standard. The Siloam Tunnel inscription from the reign of Hezekiah (around 701 BC) provides evidence for calculating the Israelite standard cubit at approximately 17.5 inches, based on the tunnel's known length of about 1,750 feet and the inscription's measurement of 1,200 cubits. Cubit rods and measuring devices have been found at numerous archaeological sites throughout Egypt and Mesopotamia.