TMYK - Vav
Vav
The doctrine from the stroke or letter vav ו is that God spoke and clarified or explained things by separating two side of the same thing. If the yod י is the void that God created within himself to have a place for the universe, then the vav ו is the first words spoken into the void "Let there be light". [1]
Light is a symbol of God's holiness. It is an expression of being separate... being different.
Where was the light before creation? Was God NOT holy before then? In Ge 1:3 he declared himself to be holy to his creation. Prior to creation there was no one to be separate or different from. Though all his attributes were present, attributes of comparison could not be expressed.
We can see a hint of his holiness hidden in his name. His name is Elohim 'elohiym' אלהים but the is a pun 'alo-chuwm' אלחום meaning 'not dark'. He is the light!
The sword
The vav ו looks like a sword, and it represents the word as the two-edged sword.Heb 4:12 For the word of God [is] quick, and powerful, and sharper than any two-edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and [is] a discerner of the thoughts and intents of the heart.</ref> <ref>
We can think of the yod י as a generic noun and the vav ו as a generic verb. Since the vav starts with a yod, the action has an actor. God is the first mover.
All the other letter are formed with yods and vavs, and their meaning derive from them.