Hebrews 3:7, 13, 15
Hebrews 3:13 NKJV
but exhort one another daily, while it is called “Today,” lest any of you be hardened through the deceitfulness of sin.
Hebrews 3:15 NKJV
while it is said: “Today, if you will hear His voice, Do not harden your hearts as in the rebellion.”