'Spare' in the Bible

From the wrath of the LORD of the Heavenly Armies the land has been scorched, and the people have become like fuel for the fire; no one will spare his neighbor.

Their bows will dash the young men to pieces; they'll show no pity on those not yet born, and their eyes will not spare children.

Your nakedness will be exposed, and your disgrace will also be seen. I'll take vengeance, and I will spare no mortal.