Hebrews 4:5-8

and again in this, “THEY SHALL NOT ENTER MY REST.” [Ps 95:11] Therefore, since the promise remains for some to enter His rest, and those who formerly had the good news preached to them failed to [grasp it and did not] enter because of [their unbelief evidenced by] disobedience, He again sets a definite day, [a new] “Today,” [providing another opportunity to enter that rest by] saying through David after so long a time, just as has been said before [in the words already quoted], “TODAY IF YOU HEAR HIS VOICE, DO NOT HARDEN YOUR HEARTS.” [Ps 95:7, 8] [This mention of a rest was not a reference to their entering into Canaan.] For if Joshua had given them rest, God would not speak about another day [of opportunity] after that.