Hour Glass

Photo: Hour glass in a three-legged stand,
 CC BY-SA 3.0, Wikimedia Commons.
Hour glass (or sand glass, sand clock, or sand timer) is Time described as a woman with a crown of twelve stars on her head and the moon under her feet.
A woman clothed with the sun, and the moon under her feet, and upon her head a crown of twelve stars. (Revelation 12:1) "KJV"

A woman: the hour glass

The hour glass is a light cone connecting the past, present, and future. The past is described as the moon under the feet of the woman, the future is described as a crown of twelve stars upon the head of the woman, and the light cone connecting the past and the future is described as a cloth of sunlight.

As a light cone, the base of the hour glass is a circle and its summit (the top) is a circle. The circle at the summit or the height of the glass is the twelve tribes of Israel (the crown of twelve stars), and the circle at the base or the depth of the glass is the twelve Imams (the twelve foundations)

Judaism, practiced during the era of the twelve tribes of Israel, is the crown of twelve stars and Islam is the moon at the feet.

Since the woman towers from her feet to her head, the hour glass towers from Islam to Judaism; Islam is at the feet, and Judaism is at the head.

Islam = Past (depth)
Judaism = Future (height)

Christianity is the present - the bridge between the past (Islam) and the future (Judaism).

The present is a square whose breadth is equal to its length. The breadth is the Father (the Eastern Orthodox Church) and the length is the Son (the Catholic Church).
And I pray that you, being rooted and established in love, may have power, together with all the Lord's holy people, to grasp how wide and long and high and deep is the love of Christ, (Ephesians 3:17-18) "NIV"
Wide = Width
         = Breadth
         = Son (Catholic Church)

Long = Length
         = Father (Eastern Orthodox Church)

High = Height
         = Judaism (12 Gates)

Deep = Depth
          = Islam (12 Foundations)

Square = Length × Breadth
            = Son × Father
            = Catholic Church × Eastern Orthodox Church
            = Christianity (Wall)

Christianity is the mid-point of the hour glass. And Christianity at the mid-point is a square at the center of the two sides of a light cone. The square is the two-dimensional structure of the New Jerusalem.
The city was laid out like a square, as long as it was wide. (Revelation 21:16) "NIV"
The City = the New Jerusalem
               = the Holy City
               = Length (Long) × Breadth (Wide)
               = Square (Christianity)

The New Jerusalem is a clock (the hour glass) where the hour hand is Judaism (the 12 tribes of Israel), the minute hand is Islam (the 12 Imams), and the second hand is Christianity (the 12 apostles).

God's people are like sand moving across time (the hour glass) from the future to the past, and from the past to the future. Judaism (the future) empties into Islam (the past); then the hour glass is inverted and Islam (the past) empties into Judaism (the future). The hour glass, made up of Islam (the past) and Judaism (the future) is Christianity (the present).