Hebrews 4:6 DBY

⁴  For he has said somewhere of the seventh [day] thus, And God rested on the seventh day from all his works:

⁵  and in this again, If they shall enter into my rest.

⁶  Seeing therefore it remains that some enter into it, and those who first received the glad tidings did not enter in on account of not hearkening to the word,

⁷  again he determines a certain day, saying, in David, 'To-day,' after so long a time; (according as it has been said before), To-day, if ye will hear his voice, harden not your hearts.

⁸  For if Jesus had brought them into rest, he would not have spoken afterwards about another day.