Genesis 17:23

“And Abraham took Ishmael his son, etc.] To circumcise him; he took his son first, to set an example to his servants, and that they might the more readily comply when they saw that Abraham’s son, and at that time his only son, was circumcised before their eyes: and all that were born in his house; which were three hundred and eighteen when he rescued Lot from the kings, (<011414>Genesis 14:14); and perhaps they might be now increased: and all that were bought with his money; how many those were, it is not easy to say, no doubt they were many: every male among the men of Abraham’s house; whether children or servants, and those little or grown up: and circumcised the flesh of their foreskin, in…”

“- 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…”

“17:23-27 Having received God’s word about Isaac, Abraham immediately complied with God’s instructions. He implemented the rite of circumcision as an act of faith; it signified their participation in the covenant (cp. Rom 4:11-12; Gal 5:2-6, 11; 6:15; Phil 3:2-3; Col 2:11-12; 1 Pet 3:21).”