Exodus 1:19

1:19 The midwives said to Pharaoh, “Because the Hebrew women are not like the Egyptian women – for the Hebrew women are vigorous; they give birth before the midwife gets to them!”

Exodus 39:14

39:14 The stones were for the names of the sons of Israel, twelve, corresponding to the number of their names. Each name corresponding to one of the twelve tribes was like the engravings of a seal.