Hi John and Doves,
Further to the 8th letter of the Hebrew alphabet - Chet - resembling the symbol of Pi, I explored the spiritual meaning of Chet. WOW! Fascinating! Scroll down the page to the chapter titled 'Advanced Information' to really get into the meanings. For example - Chet denotes the light of God descending upon the earth. Chet is also known as the number of life. There is so much more. One can really disappear down the rabbit hole with this study. This is a 'Hebrew for Christians' web page in the link below.