Hebrews 4:4

4 For somewhere he has spoken about the seventh day in these words: “On the seventh day God rested from all his works.”a

Read Hebrews 4:4 Using Other Translations

For he spake in a certain place of the seventh day on this wise, And God did rest the seventh day from all his works.
For he has somewhere spoken of the seventh day in this way: "And God rested on the seventh day from all his works."
We know it is ready because of the place in the Scriptures where it mentions the seventh day: “On the seventh day God rested from all his work.”