Hebrews 3:18-19

And who were they to whom God swore that they should not enter upon his rest, if not those who had proved faithless?

Hebrews 3:12

Be careful, Brothers, that there is never found in any one of you a wicked and faithless heart, shown by his separating himself from the Living God.

Hebrews 11:6

But without faith it is impossible to please him, for he who comes to God must believe that God exists, and that he rewards those who seek for him.

1 John 5:10

He who believes in the Son of God has that testimony within him. He who does not believe God has made God a liar, by refusing to believe in that testimony which he has borne about his Son.

Jude 1:5

Now I want to remind you--but you already know it all--that, though the Lord delivered the People from Egypt, yet he afterwards destroyed those who refused to believe in him;

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