'Sparing' in the Bible

The Lord has done what He purposed;He has accomplished His wordWhich He commanded from days of old.He has thrown down without sparing,And He has caused the enemy to rejoice over you;He has exalted the might of your adversaries.

On the ground in the streetsLie young and old;My virgins and my young menHave fallen by the sword.You have slain them in the day of Your anger,You have slaughtered, not sparing.