A doorway as symbol...................

Contains two columns and a keystone that 'connects at the top'.

That same doorway mantle that is covered in the blood of the lamb for 'the passover.'

Let he who has ears hear.

Those two columns can be seen in the symbol of the pharoah's rule. His crossed arms hold the flail as severity in the left and the shepard's crook in the right Mercy, as the two forms of control, Mercy and Severity called Joachim and Boaz in the Masonic tradition of the Two Towers, symbolized in the Twin Towers of 9-11 built using Masonic measurements by master masons.

A is the beginning stage of matter coming into being.

Above it is the invisible ineffable one God without division.