'Cruel' in the Bible

The righteous knoweth the life of his beast, And the mercies of the wicked are cruel.

Bow and halbert they seize, Cruel are they, and they have no mercy, Their voice as a sea soundeth, and on horses they ride, Set in array as a man for battle, Against thee, O daughter of Babylon.

Even dragons have drawn out the breast, They have suckled their young ones, The daughter of my people is become cruel, Like the ostriches in a wilderness.