|Noah Webster's Dictionary|
1. (p. pr. & vb. n.) of Harden.
2. (n.) Making hard or harder.
3. (n.) That which hardens, as a material used for converting the surface of iron into steel.
Int. Standard Bible Encyclopedia
Hardening (6 Occurrences)
Mark 3:5 When he had looked around at them with anger, being grieved at the hardening of their hearts, he said to the man, "Stretch out your hand." He stretched it out, and his hand was restored as healthy as the other. (WEB WEY ASV DBY)
Romans 11:25 For I don't desire you to be ignorant, brothers, of this mystery, so that you won't be wise in your own conceits, that a partial hardening has happened to Israel, until the fullness of the Gentiles has come in, (WEB ASV NAS RSV NIV)
Ephesians 4:18 being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their hearts; (WEB ASV NIV)
Job 38:38 In the hardening of dust into hardness, And clods cleave together? (YLT)
Proverbs 28:14 O the happiness of a man fearing continually, And whoso is hardening his heart falleth into evil. (YLT)
Proverbs 29:1 A man often reproved, hardening the neck, Is suddenly broken, and there is no healing. (YLT)