Albert Barnes Commentary Psalms 72:14

"He will redeem their soul from oppression and violence; And precious will their blood be in his sight:" — Psalms 72:14 (ASV)

He shall redeem their soul from deceit and violence—He will rescue their lives; that is, he will deliver them from the hands of men who practice deceit, or who are dishonest and unjust—and from the hands of those who oppress. This is stating in another form the idea that his reign would be one of equity, protecting the rights of the poor, and delivering the oppressed.

And precious shall their blood be in his sight—That is, so precious that he will not permit it to be shed unjustly, but will come to their rescue when their life is in danger; or, that—being shed—he will regard it as so valuable that he will not permit it to go unavenged. He will never be indifferent to their safety, or their reputation.