'Callous' in the Bible

because they had not understood [the miracle of] the loaves [how it revealed the power and deity of Jesus]; but [in fact] their heart was hardened [being oblivious and indifferent to His amazing works].

“He has blinded their eyes and He hardened their heart, to keep them from seeing with their eyes and understanding with their heart and being converted; otherwise, I [their God] would heal them.”

But because of your callous stubbornness and unrepentant heart you are [deliberately] storing up wrath for yourself on the day of wrath when God’s righteous judgment will be revealed.

And they, [the ungodly in their spiritual apathy], having become callous and unfeeling, have given themselves over [as prey] to unbridled sensuality, eagerly craving the practice of every kind of impurity [that their desires may demand].

[and they will be] unloving [devoid of natural human affection, calloused and inhumane], irreconcilable, malicious gossips, devoid of self-control [intemperate, immoral], brutal, haters of good,