Hebrews 3:15
which is imply'd by, "to-day since ye hear his voice, harden not your hearts, as at Meriba."
Hebrews 3:7-8
Wherefore as the holy spirit saith, "since to-day you hear his voice,
Hebrews 10:29
don't you think then that he deserves a much greater punishment, who hath despised the son of God, and counted the blood of the covenant wherewith be was sanctified, to have been justly shed, thereby offering an indignity to the spirit of grace?
Hebrews 10:38
the just shall have life by trusting in me, but if he revolt, he will be the object of my displeasure.
Treasury of Scripture Knowledge
Summary
While it is said, To day if ye will hear his voice, harden not your hearts, as in the provocation.