They are senseless, faithless, heartless, merciless.
Cross References
Mark 7:18"Are you still so dull?" He asked. "Do you not understand? Nothing that enters a man from the outside can defile him,
2 Timothy 3:3unloving, unforgiving, slanderous, without self-control, brutal, without love of good,
Treasury of Scripture
Without understanding, covenant breakers, without natural affection, implacable, unmerciful:
Without understanding.
Romans 1:20,21
For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse: …
Romans 3:11
There is none that understandeth, there is none that seeketh after God.
Proverbs 18:2
A fool hath no delight in understanding, but that his heart may discover itself.
covenant-breakers.
2 Kings 18:14
And Hezekiah king of Judah sent to the king of Assyria to Lachish, saying, I have offended; return from me: that which thou puttest on me will I bear. And the king of Assyria appointed unto Hezekiah king of Judah three hundred talents of silver and thirty talents of gold.
Isaiah 33:8
The highways lie waste, the wayfaring man ceaseth: he hath broken the covenant, he hath despised the cities, he regardeth no man.
2 Timothy 3:3
Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good,
without natural affection.