Deuteronomy 19:10

10 and innocent blood is not shed in the midst of thy land which Jehovah thy God is giving to thee -- an inheritance, and there hath been upon thee blood.

Deuteronomy 19:10 Meaning and Commentary

Deuteronomy 19:10

That innocent blood be not shed
As it would be if such a slayer as before described was killed by the avenger of blood, before he could get to one of these cities of refuge, or supposing that they had not bean appointed, or a sufficient number of them:

which the Lord thy God giveth thee for an inheritance;
to be enjoyed by them and their children after them, provided they did not defile it by their sins, but observed the commands of the Lord to obey them and

so blood be upon thee;
the guilt of innocent blood crying for vengeance, as would be the case if such a man's blood was shed as before described; it seems as if the guilt would rather affect the whole land, for not having a proper provision of "asylums" for such persons, than the avenger of blood.

Deuteronomy 19:10 In-Context

8 `And if Jehovah thy God doth enlarge thy border, as He hath sworn to thy fathers, and hath given to thee all the land which He hath spoken to give to thy fathers --
9 when thou keepest all this command to do it, which I am commanding thee to-day, to love Jehovah thy God, and to walk in His ways all the days -- then thou hast added to thee yet three cities to these three;
10 and innocent blood is not shed in the midst of thy land which Jehovah thy God is giving to thee -- an inheritance, and there hath been upon thee blood.
11 `And when a man is hating his neighbour, and hath lain in wait for him, and risen against him, and smitten him -- the life, and he hath died, and he hath fled unto one of these cities,
12 then the elders of his city have sent and taken him from thence, and given him into the hand of the redeemer of blood, and he hath died;
Young's Literal Translation is in the public domain.