4 This is to be the rule for anyone who goes in flight there, after causing the death of his neighbour in error and not through hate; 5 For example, if a man goes into the woods with his neighbour for the purpose of cutting down trees, and when he takes his axe to give a blow to the tree, the head of the axe comes off, and falling on to his neighbour gives him a wound causing his death; then the man may go in flight to one of these towns and be safe: 6 For if not, he who has the right of punishment may go running after the taker of life in the heat of his wrath, and overtake him because the way is long, and give him a death-blow; though it is not right for him to be put to death because he was not moved by hate. 7 And so I am ordering you to see that three towns are marked out for this purpose. 8 And if the Lord your God makes wide the limits of your land, as he said in his oath to your fathers, and gives you all the land which he undertook to give to your fathers; 9 If you keep and do all these orders which I give you today, loving the Lord your God and walking ever in his ways; then let three more towns, in addition to these three, be marked out for you: 10 So that in all your land, which the Lord your God is giving you for your heritage, no man may be wrongly put to death, for which you will be responsible.
Matthew Henry's Commentary on Deuteronomy 19:4-10
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.