Yahweh, why do you allow us to wander from your ways and harden our hearts to be so stubborn that we do not obey you? Please come back to us, for the sake of those who serve you, for the sake of your people, the tribes that are your inheritance.
Then Jesus appeared before the eleven apostles as they were eating a meal. He corrected them for having such hard, unbelieving hearts because they did not believe those who saw him after his resurrection.
So then, Israel failed to achieve what it had strived for, but the divinely chosen remnant receives it by grace, while the rest were hardened and unable to receive the truth.
Then looking around at everyone, Jesus was moved with indignation and grieved by the hardness of their hearts and said to the man, “Now stretch out your hand!” As he stretched out his hand, it was instantly healed!
God has blinded their eyes and hardened their hearts to the truth. So with their eyes and hearts closed they cannot understand the truth nor turn to me so that I could instantly cleanse and heal them.