Hebrews 3:13

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

Hebrews 3:13 In-Context

11 As in my anger I swore, "They will not enter my rest.' "
12 Take care, brothers and sisters, that none of you may have an evil, unbelieving heart that turns away from the living God.
13 But exhort one another every day, as long as it is called "today," so that none of you may be hardened by the deceitfulness of sin.
14 For we have become partners of Christ, if only we hold our first confidence firm to the end.
15 As it is said, "Today, if you hear his voice, do not harden your hearts as in the rebellion."
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.