potter's clay

noun3

1. •
   The clay used by a potter.
2. •
   A person or people created and shaped by God.

   • I am the potter’s clay.
   • We are but potter’s clay.
3. •
   A nation or kingdom.

   • And whereas thou sawest the feet and toes, part of potters’ clay, and part of iron, the kingdom shall be divided. — 1611