Hebrews 4:1; Hebrews 4:6-8

Hebrews 4:1

1 Let us therefore fear, lest, a promise being left of entering into his rest, any one of you might seem to have failed [of it].

Hebrews 4:6-8

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.