'Sparing' in the Bible

“For it will hurl at him without sparing;He will surely try to flee from its power.

“Draw up your battle lines against Babylon on every side,All you who bend the bow;Shoot at her, do not be sparing with your arrows,For she has sinned against the Lord.

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.

Will they therefore empty their netAnd continually slay nations without sparing?