5. Measures were mostly taken from the human body. The greater cubit, the length from the elbow to the end of the middle finger, a little more than two feet: exceeding the ordinary cubit (from the elbow to the wrist) by an hand-breadth, that is, twenty-one inches in all. Compare Eze 43:13, with Eze 40:5. The palm was the full breadth of the hand, three and a half inches.
      breadth of the building--that is, the boundary wall. The imperfections in the old temple's boundary wall were to have no place here. The buildings attached to it had been sometimes turned to common uses; for example, Jeremiah was imprisoned in one (Jer 20:2; 29:26). But now all these were to be holy to the Lord. The gates and doorways to the city of God were to be imprinted in their architecture with the idea of the exclusion of everything defiled (Re 21:27). The east gate was to be especially sacred, as it was through it the glory of God had departed (Eze 11:23), and through it the glory was to return (Eze 43:1, 2; 44:2, 3).

JFB.