This clay figurine is a bound captive or enemy and was used in temple ritual to destroy the enemy. The spell written on this figurine is done in red because red was associated with destruction. After the ritual these objects would be destroyed.
Brian Zimerle of the Oriental Institute at the University of Chicago demonstrates and explains the techniques that would have been used by potters in the Egyptian predynastic period (c. 6000-3000 BC). 2/3.