'Ruthless' in the Bible

In this way I will punish the world for its evilAnd the wicked for their wickedness [their sin, their injustice, their wrongdoing];I will also put an end to the arrogance of the proudAnd will abase the arrogance of the tyrant.

A harsh vision has been shown to me;The treacherous one deals treacherously, and the destroyer destroys.Go up, Elam! Lay siege, Media!All the groaning [caused by Babylon’s ruthless oppressions] I [the Lord] have brought to an end.

Therefore a strong people will honor You;Cities of terrible and violent nations will fear You.

For You have been a stronghold for the helpless,A stronghold for the poor in his distress,A shelter from the storm, a shade from the heat;For the breath of tyrantsIs like a rainstorm against a wall.

Like heat in a dry land, You will subdue the noise of foreigners [rejoicing over their enemies];Like heat in the shadow of a cloud, the song of the tyrants is silenced.

But the multitude of your enemies [that assault you] will become like fine dust,And the multitude of the tyrants like the chaff which blows away;And it will happen in an instant, suddenly [that your enemy is destroyed].