Hebrews 3:12-15

12Take care, brothers, lest there be in any of you an evil, unbelieving heart, leading you to fall away from the living God.

13But exhort one another every day, as long as it is called "today," that none of you may be hardened by the deceitfulness of sin.

14For we have come to share in Christ, if indeed we hold our original confidence firm to the end.

15As it is said, "Today, if you hear his voice, do not harden your hearts as in the rebellion."