Hebrews 4:5-8

and in this place again, They shall not enter into my rest. Seeing therefore it remaineth that some should enter thereinto, and they to whom the good tidings were before preached failed to enter in because of disobedience, he again defineth a certain day, To-day, saying in David so long a time afterward (even as hath been said before), To-day if ye shall hear his voice, Harden not your hearts. For if Joshua had given them rest, he would not have spoken afterward of another day.