Hebrews 3:7-19 - A Serious Warning Against Unbelief

⁷ Therefore, as the Holy Spirit says, Today if ye hear his voice, ⁸ do not harden your hearts as in the rebellion, according to the day of the trial in the wilderness, ⁹ where your fathers challenged me, tested me, and saw my works forty years. ¹⁰ Therefore I was angry with that generation, and said, They are always led astray in their heart, and they did not know my ways. ¹¹ So I swore in my wrath, They will not enter into my rest.

¹² Watch, brothers, lest there will be in any of you an evil heart of unbelief in withdrawing from the living God. ¹³ But exhort each other during each day, while it is called Today, lest any of you may be hardened by the deceitfulness of sin. ¹⁴ For we have become companions of the Christ, if only we keep in possession the primacy of the essence, steadfast until the end, ¹⁵ while it is said, Today if ye will hear his voice, do not harden your hearts as in the rebellion.

¹⁶ For some who heard rebelled, but not all those who came out of Egypt by Moses. ¹⁷ But with whom was he angry forty years? Was it not with those who sinned, whose carcasses fell in the wilderness? ¹⁸ And to whom did he swear were not going to enter into his rest, if not to those who were disobedient? ¹⁹ And we see that they were not able to enter in because of unbelief.