Hebrews 4:3-4 (New International Version)

³Now we who have believed enter that rest, just as God has said,
   "So I declared on oath in my anger,
   'They shall never enter my rest.' "^[a] And yet his work has been finished since the creation of the world. ⁴For somewhere he has spoken about the seventh day in these words: "And on the seventh day God rested from all his work."^[b]