{The covenant of circumcision} (diath(886b)(886e) peritom(8873)). A
covenant marked by (genitive) circumcision (no article) of which
circumcision is the sign ( Ro 4:11 ) as set forth in  Ge
17:9-14 . In the ancient Greek diath(886b)(885c) was usually will
(Latin, _testamentum_) and sunth(886b)(885c) was used for covenant
(sun, together, rather than dia, between). But the LXX and
the N.T. use diath(886b)(885c) for covenant (will in  Heb 9:15f. ) as
Lightfoot on  Ga 3:16  says: "The LXX translation and New
Testament writers probably preferred diath(886b)(885c) as better
expressing the {free grace} of God than sunth(886b)(885c)." {And so}
(kai hout(9373)). After the covenant was made and as a sign and
seal of it.