The Hebrew noun ammah refers to the cubit — the standard unit of linear measurement in the ancient Near East, typically the length from the elbow to the tip of the middle finger (approximately 17.5–21 inches). It was used to measure Noah's ark, the tabernacle, Solomon's temple, and Ezekiel's visionary temple.
Every dimension of the tabernacle and temple was given in cubits — God's precision in specifying sacred space communicates that worship is not improvised but divinely ordered. The ark of Noah, the ark of the covenant, Solomon's temple, and the New Jerusalem are all measured with exactness. This reveals that God cares about structure, proportion, and holiness. Ezekiel's cubit-by-cubit vision (Ezekiel 40-48) envisions a future where all of creation will be rightly ordered around the presence of God — measured out, restored, and holy.