Hebrews 3:19 (NKJV), “So we see that they could not enter in because of unbelief.”
Hebrews 4:3-11 (NKJV),
For we who have believed do enter that rest, as He has said:
“So I swore in My wrath,
‘They shall not enter My rest,’ ”
although the works were finished from the foundation of the world. For He has spoken in a certain place of the seventh day in this way: “And God rested on the seventh day from all His works”; and again in this place: “They shall not enter My rest.”
Since therefore it remains that some must enter it, and those to whom it was first preached did not enter because of disobedience, again He designates a certain day, saying in David, “Today,” after such a long time, as it has been said:
“Today, if you will hear His voice,
Do not harden your hearts.”
For if Joshua had given them rest, then He would not afterward have spoken of another day. There remains therefore a rest for the people of God. For he who has entered His rest has himself also ceased from his works as God did from His.
Let us therefore be diligent to enter that rest, lest anyone fall according to the same example of disobedience.
Jeremiah 50:6-7 (NKJV),
“My people have been lost sheep.
Their shepherds have led them astray;
They have turned them away on the mountains.
They have gone from mountain to hill;
They have forgotten their resting place.
All who found them have devoured them;
And their adversaries said, ‘We have not offended,
Because they have sinned against the Lord, the habitation of justice,
The Lord, the hope of their fathers.’