The second letter of the Hebrew Aleph-Beyt understandably represents the Son, and perpetuated by house including the bloodline.

It sounds like our letter ‘B’, but you can put a dot in the middle and it sounds more like a ‘V'( ‘bh’ really).
We see the word for ‘son’ is ‘Ben’ in Hebrew. The word start with beyt, so it immediately implies sonship, family, household, etc. The original pictograph was a representation of a house or tent, so it fed into memory. It is also used to specify ‘in’ or ‘with’, as like a household, when used as a prefix. For instance, the first word of the Bible is tyvæ!ar}B “be’ree’shiyt’, this includes the prefix “beyt” and the word “reshiyt” ‘( OT:7225
the first, in place, time, order or rank (specifically, a firstfruit):
KJV – beginning, chief (-est), first (-fruits, part, time), principal thing ).

Another cool thing is that similar to Aleph representing the number 1, and therefore the Father, Beyt represents the number 2, therefore the Son! Awesome! As such, it eventually morphed into late semitic ‘2’, which is what we use today. It is obviously the forerunner of our ‘B’.
So here’s a bigger question to ponder… Why does the Bible start with the letter Beyt ( The Son ), and not Aleph ( The Father )? Hmmm… John 1:1