G4457–πώρωσις–pōrōsis

Grieved and indignant at the hardening of their hearts, He looked round on them with anger, and said to the man, "Stretch out your arm." He stretched it out, and the arm was completely restored.

πωρώσει pōrōsei “hardness”

For there is a truth, brethren, not revealed hitherto, of which I do not wish to leave you in ignorance, for fear you should attribute superior wisdom to yourselves--the truth, I mean, that partial blindness has fallen upon Israel until the great mass of

πώρωσις pōrōsis “a hardening”

with darkened understandings, having by reason of the ignorance which is deep-seated in them and the insensibility of their moral nature, no share in the Life which God gives.

πώρωσιν pōrōsin “hardness”