A cyclic quadrilateral is formed when the vertices of a four-sided polygon lie on the circumference of a circle. In harmony, the cyclic quadrilateral is a square ABCD enclosed by a circle.

The square is two-dimensional space and the circle is time, such that the cyclic quadrilateral is spacetime.

The square is made up of the following four straight lines:

1. AB
2. BC
3. CD
4. DA

Each straight line is a chord, such that the square is a product of four chords. In other words, every side of the square is a chord of a circle. Since the circle is time and the square is space, space is reconciled to time by the chord of the circle.

Space is the earth and time is the sky. Since man dwells on earth and God in the sky, the chord is the means by which man and God or earth and sky are connected. The chord is a rope leading from earth to heaven, and humans can climb up from earth to heaven.

We know from our knowledge of the mid-point of a chord that the chord is pure knowledge. This means that knowledge is the rope by which humans ascend from earth to heaven. They that are learning are on their way to the sky. And the learned are they that have made it to heaven.

Children are more liable to enter into heaven because they are more likely to learn. This was why Jesus recommended that adults must be like children if they must enter into heaven.

The circle is the glory and the square is the holy city in glory. This means that the cyclic quadrilateral, made up of the circle and the square, is the sum of the glory and the city in glory.

Knowledge is the means by which the holy city descends from the sky to the earth.