The vav is the "sword" of the word. It is a prefix meaning 'and'. Like 'and' it divides two things and connects them. [1] As a visual allegory, it looks like a sword. It indicates that there are two sides to an issue.
To understand ideas, we pull them apart and put them back together. This clarifies and distinguishes the meaning.
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The distinct Vav
↑▸±Heb 4:12 For the word of God [is] quick, and powerful, and sharper than any twoedged 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.