The Sefer צאינה וראינה authored by R. Yakov b Yitzchok
women who didn't understand Loshon Hakodesh.
It is a collection of beautiful Midrashim in Yiddish,
Until about 80 years ago the most popular Sefer
(after Siddur & Tehillim) that Yiddish-speaking women
possessed, was the צאינה וראינה.
It was very common in those days for women to be illiterate
, They had a "Zogerrin". one who would read
the צאינה וראינה for groups of women.
There is a well-known Midrash quoted by many but is
not to be found in any Midrash we have today. The first
and only Mokor (source) for it is the צאינה וראינה
"Originally Bris Milah was performed with a sharpened stone as mentioned in the Parsha how Tziporah performed the Bris with a stone.
Because the metal helmet on Golias's head allowed the rock Dovid Hamelech threw to penetrate and hit Golias's forehead, therefore metal was rewarded and all Brisos from then on are performed only with metal knives."