The first Waw [ו] in the Torah (pronounced vav) begins its sixth Hebrew word, thus joining the words for “heaven” and “earth”. This is also the twenty-second letter of the Hebrew Bible (our Genesis 1:1), so scholars believe it represents all twenty-two individual powers of creation and all the letters of the alphabet together. (The Hebrew alphabet, as mentioned several times in this series, has only twenty-two letters.)
Literally, ו means “hook” or “peg”. Hebrew sages say the letterform portrays Jacob’s ladder, reaching down from heaven to earth. It’s a nice thought, but personally I think those sages may have waxed a little fanciful.