Now faith is being certain of what we do not see. Hebrews 11:1

So in Christ Jesus you are all children of God through faith (belief). Galatians 3:26

“‘If you can’?” said Jesus. “Everything is possible for one who believes.” Mark 9:23

So we see that they were not able to enter because of their unbelief. Hebrews 3:19

As for you, you were dead in your transgressions and sins, in which you used to live when you followed the ways of this world and of the ruler of the kingdom of the air, the spirit who is now at work in those who are disobedient. All of us also lived among them at one time, gratifying the cravings of our flesh and following its desires and thoughts. Like the rest, we were by nature deserving of wrath. Eph 2:1-3

But Scripture has locked up everything under the control of sin, so that what was promised, being given through faith in Jesus Christ, might be given to those who believe. Gal 3:22

My people are determined to turn from me. Even though they call me God MOST HIGH. Hosea 11:7

Do not love the world or anything in the world. If anyone loves the world, love for the Father is not in them.  The world and its desires pass away, but whoever does the will of God lives forever. 1 John 2:15, 17

For this people’s heart has become calloused; they hardly hear with their ears, and they have closed their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts and turn, and I would heal them.’ Matthew 13:15