NET
13 But exhort one another each day, as long as it is called “Today,” that none of you may become hardened by sin’s deception.
Darby
13 But encourage yourselves each day, as long as it is called To-day, that none of you be hardened by the deceitfulness of sin.
KJV
13 But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin.