[12] See to it, brothers and sisters, that none of you has a sinful, unbelieving heart that turns away from the living God. [13] But encourage one another daily, as long as it is called “Today,” so that none of you may be hardened by sin’s deceitfulness. [14] We have come to share in Christ, if indeed we hold our original conviction firmly to the very end. [15] As has just been said: “Today, if you hear his voice, do not harden your hearts as you did in the rebellion.” [16] Who were they who heard and rebelled? Were they not all those Moses led out of Egypt? [17] And with whom was he angry for forty years? Was it not with those who sinned, whose bodies perished in the wilderness? [18] And to whom did God swear that they would never enter his rest if not to those who disobeyed? [19] So we see that they were not able to enter, because of their unbelief.