Noun sklērokardia (hardness of heart) in the Bibles

(Translation from NRSV for the New Testament and Brenton for the Septuagint with a few modifications for a more literal meaning)


Matthew

19: 8He said to them, "It was because of your hardness of heart (sklērokardia) that Moses allowed you to divorce your wives, but from the beginning it was not so.

Mark

10: 5But Jesus said to them, "Because of your hardness of heart (sklērokardia) he wrote this commandment for you.
16: 14Later he appeared to the eleven themselves as they were sitting at the table; and he upbraided them for their lack of faith and hardness of heart (sklērokardia), because they had not believed those who saw him after he had risen.

Deuteronomy (LXX)

10: 16Therefore ye shall circumcise the hardness of your heart (sklērokardia), and ye shall not harden your neck.

Jeremiah (LXX)

4: 4Circumcise yourselves to your God, and circumcise your hardness of heart (sklērokardia), ye men of Juda, and inhabitants of Jerusalem: lest my wrath go forth as fire, and burn, and there be none to quench it, because of the evil of your devices.

Sirach (LXX)

16: 10Nor the six hundred thousand footmen, who were gathered together in the hardness of their hearts (sklērokardia).