Cubit

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NET Glossary: a unit of measurement based on the length of the human forearm from the elbow to the tip of the middle finger (usually considered to be about 18 in or 45 cm); the so-called "long cubit" mentioned in the book of Ezekiel consisted of a cubit and a handbreadth (a total of about 21 in or 52.5 cm)

Cubit [EBD]

Heb. 'ammah; i.e., "mother of the arm," the fore-arm, is a word derived from the Latin cubitus, the lower arm. It is difficult to determine the exact length of this measure, from the uncertainty whether it included the entire length from the elbow to the tip of the longest finger, or only from the elbow to the root of the hand at the wrist. The probability is that the longer was the original cubit. The common computation as to the length of the cubit makes it 20.24 inches for the ordinary cubit, and 21.888 inches for the sacred one. This is the same as the Egyptian measurements.

A rod or staff the measure of a cubit is called in Judg. 3:16 gomed, which literally means a "cut," something "cut off." The LXX. and Vulgate render it "span."

Cubit [NAVE]

CUBIT
A measure of distance, the varying length of the forearm Gen. 6:16; Deut. 3:11; Ezek. 40:5; 43:13; Rev. 21:17.
Who can add to his height, Matt. 6:27; Luke 12:25.

CUBIT [SMITH]

[WEIGHTS AND MEASURES AND MEASURES]

CUBIT [ISBE]

CUBIT - ku'-bit ('ammah; pechus): The standard for measures of length among the Hebrews. They derived it from the Babylonians, but a similar measure was used in Egypt with which they must have been familiar. The length of the cubit is variously estimated, since there seems to have been a double standard in both countries, and because we have no undisputed example of the cubit remaining to the present time. The original cubit was the length of the forearm, from the elbow to the end of the middle finger, as is implied from the derivation of the word in Hebrew and in Latin (cubitum). It seems to be referred to also in Dt 3:11: "after the cubit of a man." But this was too indefinite for a scientific standard, and the Babylonians early adopted a more accurate method of measurement which passed to the nations of the West. They had a double standard, the so-called royal cubit and the ordinary one. From the remains of buildings in Assyria and Babylonia, the former is made out to be about 20,6 inches, and a cubit of similar length was used in Egypt and must have been known to the Hebrews. This was probably the cubit mentioned by Ezek 40:5 and perhaps that of Solomon's temple, "cubits after the first measure" (2 Ch 3:3), i.e. the ancient cubit. The ordinary cubit of commerce was shorter, and has been variously estimated at between 16 and 18 or more inches, but the evidence of the Siloam inscription and of the tombs in Palestine seems to indicate 17,6 inches as the average length. See WEIGHTS AND MEASURES. This was the cubit of six palms, while the longer one was of seven (Ezek 40:5). The cubit mentioned in Jdg 3:16 is from a different word in Hebrew (gomedh) and was probably shorter, for Ehud girded it on his thigh under his clothing.

The New Testament references are Mt 6:27; Lk 12:25, "Which of you .... can add a cubit unto the measure of his life?"; Jn 21:18, "about two hundred cubits off"; Rev 21:17, "the wall thereof, a hundred and forty and four cubits."

H. Porter