ITS SPIRITUAL SIGNIFICANCE
In this number we have quite a new set of phenomena. We come to the first geometrical figure. Two straight lines cannot possibly enclose any space, or form a plane figure; neither can two plan surfaces form a solid. Three lines are necessary to form a plan figure; and three dimensions of length, breadth, and height, are necessary to form a solid. Hence three is the symbol of the cube–the simplest form of solid figure. As two is the symbol of the square, or plane contents (x2), so three is the symbol of the cube, or solid contents (x3).
Three, therefore, stands for that which is solid, real, substantial, complete, and entire.
All things that are specially complete are stamped with this number three.
God’s attributes are three: omniscience, omnipresence, and omnipotence.