Hebrews 4: 1 - 5, 11
1 Therefore, while the promise of entering his rest remains, let us fear lest any of you be judged to have failed to reach it.
2 For good news came to us just as to them; but the message which they heard did not benefit them, because it did not meet with faith in the hearers.
3 For we who have believed enter that rest, as he has said, "As I swore in my wrath, `They shall never enter my rest, '"although his works were finished from the foundation of the world.
4 For he has somewhere spoken of the seventh day in this way, "And God rested on the seventh day from all his works."
5 And again in this place he said, "They shall never enter my rest."
11 Let us therefore strive to enter that rest, that no one fall by the same sort of disobedience.

EWTN