Deuteronomy 19:10

that innocent blood be not shed Cp. Deuteronomy 21:8; Deuteronomy 27:25: here the blood of an innocent slayer.

which … for an inheritance Another standard phrase, om. by Luc., and some LXX Codd.

and so blood be upon thee Upon the nation as a whole, on the principle of ethical solidarity so often illustrated in D. For the idiom, cp. 1 Samuel 16:8; for the synon. blood in the midst of Israel, see Deuteronomy 21:8.