Hebrews 4:7-9

7He 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.”

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.

9So there remains a [full and complete] Sabbath rest for the people of God.