זֶ֥רַע יַֽעַבְדֶ֑נּוּ יְסֻפַּ֖ר לַֽאדֹנָ֣י לַדּֽוֹר׃
Die [späteren] Nachkommen dienen ihm, erzählt wird von dem Herrn [von Geschlecht] zu Geschlecht.
Midrash Tanchuma
Circumcision is so very important that it takes precedence over the Sabbath. Similarly, circumcision is so important that no child is included in the reckoning of generations until he has been circumcised, as it is said: A seed shall serve him; he shall be counted by the Lord unto the next generation (Ps. 22:31).