Manna Marked with the Number Six.
In the Cabala, the number six was considered to be one of potent mystical properties. The rabbinical writers assert that the manna, when it was found, was marked with the Hebrew vau, the equivalent of number six. As the world was created in six days; as a servant had to serve six years (Exodus xxi. 2); as the soil was tilled for six years (Exodus xxiii. 10); as Job endured six tribulations—so this number was typical of labor and suffering. Consequently it was impressed on the manna not only to show the Israelites that it fell but on six days, but also to warn them of the miseries they would undergo if they dared to desecrate the Sabbath day.