Ezekiel 43:17

The settle - The “lower settle” (L), projecting beyond the “upper settle” (M) one cubit on every side.

His stairs - Jewish tradition says that the approach to the altar was by an inclined plane, because to go up “by steps” was forbidden Exodus 20:26.

The number “twelve” was symbolic of the twelve tribes, “four,” of the earth; “sixteen” is the square of “four,” and “fourteen” the double of “seven,” the number of the covenant, as being composed of “three,” the number of God, and of “four,” the number of the world. Thus we have in the altar a special instance of Hebrew symbolism.