Hebrews 3:15
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 if ye will hear his voice,
Hebrews 10:29
by how much, think ye, shall he be counted worthy of more condign punishment who hath trampled on the Son of God, and regarded the blood of his testament, by which he was sanctified, as an unclean thing, and hath treated the gracious Spirit contumeliously?
Hebrews 10:38
"The just man then will live by faith;" and if he draw back, my soul shall have no delight 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.