Hebrews 4:7 in the King James Version
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.
Context
6 Seeing therefore it remains that some should enter into it, and they to whom the good news was preached before failed to enter in because of disobedience,
7 he again defines a certain day, “today”, saying through David so long a time afterward (just as has been said), “Today if you will hear his voice, don’t harden your hearts.”
8 For if Joshua had given them rest, he would not have spoken afterward of another day.