Deuteronomy 2:30
But Sihon king of Heshbon would not let us pass through, for the LORD your God had made his spirit stubborn and his heart obstinate, that He might give him into your hands, as is the case this day.

Proverbs 20:12
Ears that hear and eyes that see--the LORD has made them both.

Isaiah 6:9, 10
And He replied, "Go and tell this people: 'Be ever hearing, but never understanding; be ever seeing, but never perceiving.' . . .

Isaiah 63:17
Why, O LORD, do You make us stray from Your ways and harden our hearts from fearing You? Return, for the sake of Your servants, the tribes of Your heritage.

Ezekiel 36:26
I will give you a new heart and put a new spirit within you; I will remove your heart of stone and give you a heart of flesh.

Matthew 13:11-15
He replied, "The knowledge of the mysteries of the kingdom of heaven has been given to you, but not to them. . . .

John 8:43
Why do you not understand what I am saying? It is because you are unable to accept My message.

John 12:38-40
This was to fulfill the word of Isaiah the prophet: "Lord, who has believed our message? And to whom has the arm of the Lord been revealed?" . . .

Acts 28:26
Go to this people and say, "You will be ever hearing but never understanding; you will be ever seeing but never perceiving."

Romans 11:7-10
What then? What Israel was seeking, it failed to obtain, but the elect did. The others were hardened, . . .

2 Corinthians 3:15
And even to this day when Moses is read, a veil covers their hearts.

Ephesians 4:18
They are darkened in their understanding and alienated from the life of God because of the ignorance that is in them due to the hardness of their hearts.

2 Thessalonians 2:10-12
and with every wicked deception directed against those who are perishing, because they refused the love of the truth that would have saved them. . . .

2 Timothy 2:25
He must gently reprove those who oppose him, in the hope that God may grant them repentance leading to a knowledge of the truth.

James 1:13-17
When tempted, no one should say, "God is tempting me." For God cannot be tempted by evil, nor does He tempt anyone. . . .