πώρωσις G4457
pṓrōsis · po'-ro-sis · Noun Feminine
from πωρόω; stupidity or callousness:--blindness, hardness.
3 Occurrences in the King James Bible
Mark 3:5And when he had looked round about on them with anger, being grieved for the hardness of their hearts, he saith unto the man, Stretch forth thine hand. And he stretched it out: and his hand was restored whole as the other.
Romans 11:25For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
Ephesians 4:18Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart: