Genesis 17:12

“And he that is eight days old shall be circumcised among you, etc.] A son or infant of eight days old; it might not be circumcised before, but for some reasons might be deferred longer. The reasons why this rite was ordered to be performed in infancy, according to Maimonides f1083, were, because if it had been deferred to riper age it might have been neglected, and never performed; and because at such an age the pain is not so sensibly felt, by reason of the tenderness of the skin, and the weakness of the imagination; as also because the affections of parents are not then so strong as they are when one year, and especially three or four years old; and particularly it was ordered on the…”

“- The Sealing of the Covenant 1. שׁדי shaday, Shaddai, “Irresistible, able to destroy, and by inference to make, Almighty.” שׁדד shādad “be strong, destroy.” This name is found six times in Genesis, and thirty-one times in Job. 5. אברהם 'abrâhām, Abraham, from אברם 'abrām “high-father,” and הם hām the radical part of המין hāmôn a “multitude,” is obtained by a euphonic abbreviation אברהם 'abrâhām, “father of a multitude.” The root רהם rhm is a variation of רום rvm; affording, however, a link of connection in sound and sense with the root המה hāmâh “hum, be tumultuous,” from which comes המון hāmôn a “multitude.” The confluence of the biliterals רם rm and הם hm yields the…”