Hebrews 3:12

And Simon Peter answered and said, “You are the Christ, the Son of the living God.”

See to it that no one takes you captive through philosophy and empty deception, according to the tradition of men, according to the elementary principles of the world, and not according to Christ.

Therefore, holy brothers, partakers of a heavenly calling, consider the Apostle and High Priest of our confession—Jesus,

So we see that they were not able to enter because of unbelief.

how much more will the blood of Christ, who through the eternal Spirit offered Himself without blemish to God, cleanse your conscience from dead works to serve the living God?

It is a terrifying thing to fall into the hands of the living God.

But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels,

See to it that you do not refuse Him who is speaking. For if those did not escape when they refused him who warned them on earth, much less will we escape who turn away from Him who warns from heaven.

Warning Against Unbelief