Hebrews 3:15 in the King James Version
While it is said, To day if ye will hear his voice, harden not your hearts, as in the provocation.
Context
14 For we have become partakers of Christ, if we hold the beginning of our confidence firm to the end,
15 while it is said, “Today if you will hear his voice, don’t harden your hearts, as in the rebellion.”
16 For who, when they heard, rebelled? Wasn’t it all those who came out of Egypt led by Moses?