Hebrews 4:1; Hebrews 4:6-8

Hebrews 4:1

1 Let us fear therefore lest, the promise being left of entering into his rest, any of you should be thought to be wanting.

Hebrews 4:6-8

6 Seeing then it remaineth that some are to enter into it, and they to whom it was first preached did not enter because of unbelief:

7 Again he limiteth a certain day, saying in David; To day, after so long a time as it is above said: To day if you shall hear his voice, harden not your hearts.

8 For if Jesus had given them rest he would never have afterwards spoken of another day.