Hebrews 3:8; Hebrews 3:13; Hebrews 3:15; Hebrews 4:7

Hebrews 3:8

8 Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:

Hebrews 3:13

13 But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin.

Hebrews 3:15

15 While it is said, To day if ye will hear his voice, harden not your hearts, as in the provocation.

Hebrews 4:7

7 Again, he limiteth a certain day, saying in David, To day, after so long a time; as it is said, To day if ye will hear his voice, harden not your hearts.