'Ruthlessly' in the Bible

The Egyptians ruthlessly forced the Israelis to serve them,

making their lives bitter through hard labor with mortar, bricks, and all kinds of outdoor labor. They ruthlessly imposed all this work on them.

So he attacked them ruthlessly in a massive slaughter, then left to live in the caves of Etam.

Its breaking will be like when potters' vessels are broken, shattered so ruthlessly that among its fragments not even a broken sliver will be found for taking fire from a hearth or scooping water out of a cistern."