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

7 Therefore, as the holy Spirit says, To-day, when you hear his voice, 8 harden not your hearts as at the Provocation, on the day of the Temptation in the desert, 9 where your fathers put me to the proof, and for forty years felt what I could do. 10 Therefore I grew exasperated with that generation, I said, 'They are always astray in their heart': They would not learn my ways; 11 so I swore in my anger, 'they shall never enter my Rest.'

12 Brothers, take care in case there is a wicked, unbelieving heart in any of you, moving you to apostatize from the living God. 13 Rather admonish one another daily, so long as this word To-day is uttered, that none of you may be deceived by sin and hardened. 14 For we only participate in Christ provided that we keep firm to the very end the confidence with which we started, 15 this word ever sounding in our ears, To-day, when you hear his voice, harden not your hearts as at the Provocation.

16 Who heard and yet provoked him? Was it not all who left Egypt under the leadership of Moses? 17 And with whom was he exasperated for forty years? Was it not with those who sinned, whose corpses fell in the desert? 18 And to whom did he swear that they would never enter his Rest? To whom but those who disobeyed? 19 Thus we see it was owing to unbelief that they could not enter.