Hebrews 3:15
we hold fast the beginning of our confidence firm to the end) While it is said; To-day, if ye will hear his voice, harden not your hearts, as in the provocation.
Hebrews 3:7-8
Wherefore (as the Holy Ghost saith) To day,
Hebrews 10:29
Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and counted the blood of the covenant, by which he hath been sanctified, an unholy thing, and done despite to the spirit of grace?
Hebrews 10:38
Now the just shall live by faith; but if he draw back, my soul hath no pleasure in him.
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.
Bible References
General references
Luke 8:6
And some fell upon a rock, and springing up, it withered away, because it lacked moisture.
John 9:18
He said, He is a prophet. But the Jews did not believe concerning him, that he had been blind and received his sight, till they had called the parents of him who had received his sight.