Beginning of what you might ask. Well, it was the beginning of everything, of creation. The reason is this;
In Hebrew the first word of the Torah, what people might think of as the Old Testament, is בְּרֵאשִׁ֖ית, pronounced with variations thus according to Wikipedia.
Bereshit, Bereishit, Bereshis, Bereishis, or B'reshith
See
https://en.wikipedia.org/wiki/Bereshit_(parashah)
You can find the word discussed here in the first line of Hebrew.
https://biblehub.com/interlinear/genesis/1-1.htm
I could go into more detail on that word alone but I want to concentrate on a letter that is ignored.
This is the Hebrew letter א, aleph or alef which is the first letter of the Hebrew alphabet, equivalent to the English ‘a’ although it is more like the diphthong ‘æ’ . It actually starts the first line of scripture as it represents the number 1. See
https://www.chabad.org/library/bible_cdo/aid/8165
This is done to number the lines of scripture for reference as we have in the Bible, i.e. verse 1 in this case.
So in Hebrew the line it is starting with the first letter, indicating first things first if you will.
The letter א can be seen to be like an ‘X’, so we can say in the beginning was an ‘X’.
X and eggs
That in itself might be enough but there is more we can extract from this. In the first link above Wikipedia has this image:

Now an ‘X’ sounds close to ‘eggs’ so perhaps it is not so farfetched to say that in the beginning was an egg. Indeed I see there are mythological stories around this. See
https://en.wikipedia.org/wiki/Cosmic_egg
One could say that life arises from an egg. Then of course there is the X chromosome.
X chromosome
There is this interesting link.
https://www.genome.gov/about-genomics/fact-sheets/X-Chromosome-facts
It says
In fertilization, sperm can contribute an X or a Y chromosome, while eggs almost always contribute an X.
It continues to say all humans have at least one X chromosome so for us we can say in the beginning was an X.
X and N
An X indicates a mistake in marking tests or exams, a negative or no. So there is a relationship with an ‘N’ which is used to mean ‘No’.
In fact they appear together in the word ‘nix’ or ‘nyx’ meaning ‘reject’, ‘no’, or ‘nothing’.
https://www.merriam-webster.com/dictionary/nix
Nyx is also the goddess of the night in Greek mythology and night is the absence of light implying ‘nothing’.
Nix could be rearranged to read ‘inx’, so ‘in x’, darkness in an X.
There is even ‘I n x’, ‘I ‘n X’, the ‘n’ being short for ‘an’, ‘I an X’.
We can also note that there is a word not translated in the first line of Genesis which I discuss in a post which I attach under the post script.
This is אֵ֥ת, and whilst the ת is a tav, the last letter of the Hebrew alphabet, it looks like an ‘n’.
And the pronunciation of אֵ֥ת is ‘et’, with the aleph as the ‘e’, strictly really an ‘ae’ and the tav as the ‘t’. And the ‘t’ is like t for tree, the tree or cross on which Jesus died.
X and the cross
An X is the form of a cross and, as regards the cross of Jesus Christ, represents the cancellation of sin.
“He forgave us all our trespasses, having cancelled the debt ascribed to us in the decrees that stood against us. He took it away, nailing it to the cross!”
Colossians 2 v.13 part & 14
X and etc.
One might not think that there is any link between the two, but etc, in full, et cetera, sometimes gets pronounced ‘ex cetera’ where ex means ‘out of’ or ‘from’.
Et cetera means ‘et cetera’ the Latin for "and other things", or "and so forth". All these other things, all created things, stem from a beginning, out of a beginning.
You might note that cetera is an anagram of ‘create’. As to the ‘et’ meaning ‘and’, I have written a post on that, see under the post script.
Summary and final thoughts
So there you have the explanation of why in the beginning was an X.
Nowadays we have X, formerly Twitter, so perhaps in what I think of as end times we have to have what was at the beginning!
Of course birds twitter, and in the beginning of the day one might hear them as I do before dawn breaks.
Anyway, to reiterate, an X sounds like eggs from which life comes, an X chromosome in an egg.
And X is a negative, a cancellation, even darkness, the night, the absence of light.
And an X represents the cross on which Jesus died to pay the penalty for our sin, for our disobedience.
I hope that at least some people will say ‘Xactly right!
So in the beginning was an X…
P.S. here are a couple of posts which may be of interest if you haven’t already seen.
“In the beginning was the word AND…” – the missing word in the first line of Genesis
And an unusual look at the relationship of ‘n’ to ‘m’.
Why is an ‘m’ an ‘m’?
Technically "X" isnt the letter x. The logo is a combination of 1 and 0, which are the foundation of computer language. So in another sense X (1&0) is the alpha in computer speak, the alpha of AI.
Oh that was good. Very deep thought and work in that. Funny how everything seems to fall into having a similar trait. Or intended that way. Cheers.