“The foundation of Pythagorean Mathematics was as follows: The first natural division of Numbers is into EVEN and ODD. …
“They also noted that every number is one half of the total of the numbers about it, in the natural series; thus 5 is half of 6 and 4. And also of the sum of the numbers again above and below this pair; thus 5 is also half of 7 and 3, and so on till unity is reached; for the monad alone has not two terms, one below and one above; it has one above it only, and hence it is said to be the ‘source of all multitude.’
“‘Evenly even’ is another term applied anciently to one sort of even numbers. Such are those which divide into two equal parts, and each part divides evenly, and the even division is continued until unity is reached; such a number is 64. These numbers form a series, in a duple ratio from unity; thus 1, 2, 4, 8, 16, 32.” ~William Wynn Westcott
Odds Get Even
There is nothing strange or esoteric about dividing numbers first into odd and even. It is curious that some people consider one group to be better than the other for some reason. According to one psychological study, most people like odd numbers better than even ones. When asked to pick a favorite number between one and ten, nearly half chose seven. One study concluded that while even numbers feel calmer and more friendly, odd numbers are more exciting, more interesting.
Side by Side
That each number is half the sum of the two numbers closest to it is an interesting fact I had never noticed before. It is perfectly logical, of course. So in the number group 10, 11, 12; if you add en and twelve, you get 22. Half of 22 is eleven. Another thing to note here is that the companions of an odd number are even, while those of an even number are odd.
The “Evenly Even” numbers are those which can be divided by two over and over until the result is one. The example given is “1, 2, 4, 8, 16, 32”. This sequence is more recognized today as the binary sequence used in modern computers. The quote is from an old book, so it is not surprising that it doesn’t mention this.
Spiritual Cycles and Numbers
You might be thinking now, “what does all of this have to do with spiritual growth?” Plenty. Much like physical things, spiritual things happen in cycles, and numbers. We all know example of the importance of the triad in religion and spirituality. The three “persons” of God: Father, Son and Holy Spirit. Or, in other cases, Father, Mother, and Child. The seven energy centers (chakras) of the physical body. The four energy centers of the spirit body. Etc. And just as things like earthquakes, droughts, and hurricanes tend to follow cycles, so do spiritual things. The most important cycles are related to the sun and are cycles of three, four, and fifty years. A cycle of 4 years followed by one of three gives a seven-year cycle. You will get better results with your spiritual growth efforts if you follow the cycles and work with them. A biorhythm charting tool or app can help with that on a personal level.
Some of the above information gave me another thought. If even numbers are more mellow, relaxing, then spiritual practices might be more effective when done on even-numbered days. Or even days might be the time to open up and take in energy and information, while odd ones should be used to send out into the universe. Something worth experimenting with in your study of numbers and spirituality.