I believe numbers are sacred!

[Angrboda]

Believing things without basis is no trick.  It's believing only things that have a rational basis which is difficult.

Do you believe if God exists, it's not rational to believe he would create the spiritual foundations and the spiritual world of how we ascend and how blessings descend with numbers? Or would it be chaotic and random with no numbers?

If one were to grant numbers some sort of ontological reality such that we could say they exist, and grant that God exists and is the creator of all things, then numbers would be sacred in the most base sense that they have a connection with the divine. However in this, there is no obvious basis for concluding that numbers have anything to do with "the spiritual foundations and the spiritual world," or have anything to do with blessings. You've jumped from one to the other without any basis for doing so. If God exists and he created everything, his creation of numbers surely exists on a different continuum than his creation of birds and trees and fish. The question of his relation to numbers would be much the same as the question of his relation to "the good." It's not entirely clear on that basis whether numbers are incidental to his intentions in creating other things, or serves some central purpose, or was simply an unavoidable consequence of his nature. Positing that numbers are sacred, rather than answering an interesting question, simply opens up a whole bunch more.

For my part, I neither believe in God, nor that numbers have the same ontological reality as birds and trees and fish. So we never reach such lofty speculations to begin with without a great deal of prior preperatory work.

sa·cred
/ˈsākrəd/

connected with God (or the gods) or dedicated to a religious purpose and so deserving veneration.

If God is the creator of all things, then there is nothing that is not sacred. However, you seem to mean sacred to imply that the subject in question has a "higher purpose" in God's creation than do the birds and trees and fish. This you've yet to establish any basis for. Thus my comment.