I read that these are Satan’s numbers. What’s the reason? Please forgive my ignorance, I’m still learning.

Question #4824: What is the significance of 13 and 4?
There are 13 major chakras in the soul, the Magnum Opus has 13 steps, the number 13 is related to "Immortality".
We can also reach the number 4 in the form of 1+3 = 4.
For more information you can read this:
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Ὦ Ἑρμῆ Τρισμέγιστε, Μέγιστε Μέγιστε Μέγιστε
There are 13 major chakras in the soul, the Magnum Opus has 13 steps, the number 13 is related to "Immortality".
We can also reach the number 4 in the form of 1+3 = 4.
For more information you can read this:
I have an interesting technique on numerology, it's simple for tarot beginners.
The tarot deck has numbered minor arcana.
For example, you see the number 13, mark on what object, in what state of mind and in what situations you observe the number.
Then correlate the situation and the object in relation to one of the four elements, it is possible to use several.
You get for example the element of air, according to the suit of swords. Read the interpretation of the Ace of Swords and the Three of Swords. Then you can add the numbers 1+3 to get four, read the interpretation of the four of swords.
You should not subtract. Only addition.
No major arcana, no page, no knights, no kings and queens are used here.
From experience, this turns out to be a pretty accurate interpretation.
0
I have an interesting technique on numerology, it's simple for tarot beginners.
The tarot deck has numbered minor arcana.
For example, you see the number 13, mark on what object, in what state of mind and in what situations you observe the number.
Then correlate the situation and the object in relation to one of the four elements, it is possible to use several.
You get for example the element of air, according to the suit of swords. Read the interpretation of the Ace of Swords and the Three of Swords. Then you can add the numbers 1+3 to get four, read the interpretation of the four of swords.
You should not subtract. Only addition.
No major arcana, no page, no knights, no kings and queens are used here.
From experience, this turns out to be a pretty accurate interpretation.
