10 Do this so that innocent blood will not be shed in your land, which the Lord your God is giving you as your inheritance, and so that you will not be guilty of bloodshed.
10 That innocent blood be not shed in thy land, which the Lord thy God giveth thee for an inheritance, and so blood be upon thee.
10 lest innocent blood be shed in your land that the Lord your God is giving you for an inheritance, and so the guilt of bloodshed be upon you.
10 so that there is no chance of innocent blood being spilled in your land. God, your God, is giving you this land as an inheritance - you don't want to pollute it with innocent blood and bring bloodguilt upon yourselves.
10 lest innocent blood be shed in the midst of your land which the Lord your God is giving you as an inheritance, and thus guilt of bloodshed be upon you.
10 That way you will prevent the death of innocent people in the land the Lord your God is giving you as your special possession. You will not be held responsible for the death of innocent people.
Matthew Henry's Commentary on Deuteronomy 19:10
Commentary on Deuteronomy 19:1-13
(Read Deuteronomy 19:1-13)
Here is the law settled between the blood of the murdered, and the blood of the murderer; provision is made, that the cities of refuge should be a protection, so that a man should not die for that as a crime, which was not his willing act. In Christ, the Lord our Righteousness, refuge is provided for those who by faith flee unto him. But there is no refuge in Jesus Christ for presumptuous sinners, who go on still in their trespasses. Those who flee to Christ from their sins, shall be safe in him, but not those who expect to be sheltered by him in their sins.