That is the fear that every person who follows Jesus should have: may I not drift from Jesus.
Instead, may I (verse 13) exhort my brothers, and be exhorted myself every day, as long as it is called ‘today,’ that none of you may be hardened by the deceitfulness of sin.
For (verse 14) we have come to share in Christ if indeed we hold our original confidence firm to the end.
As it is said, ‘Today, if you hear his voice, do not harden your hearts as in the rebellion.’
Note: it’s quoted again. The second time. It’s quoted three times altogether in this passage.
It is such an important verse: ‘Today, if you hear his voice, do not harden your hearts in the rebellion.’
So, that’s one thing: making sure we enter the rest and enter heaven by staying faithful to little Jesus.
