Hebrews 4:6-8

Amplified Bible

⁶ 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, ⁷ 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],

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.