JST, Hebrews 4:3. Compare Hebrews 4:3

Those who harden their hearts will not be saved; those who repent will enter into the Lord’s rest.

3 For we who have believed do enter into rest, as he said, As I have sworn in my wrath, If they harden their hearts they shall not enter into my rest; also, I have sworn, If they will not harden their hearts, they shall enter into my rest; although the works of God were prepared, (or finished,) from the foundation of the world.