(Hebrews 3:15) "While it is said, Today if ye will hear his voice, harden not your hearts, as in the provocation".

(Hebrews 3:16) "For some, when they had heard did provoke; howbeit not all that came out of Egypt by Moses"

(Hebrews 3:17) "But with whom was he grieved forty years? was it not with them that had sinned?"
whose carcases fell in the wilderness?

(Hebrews 3:18) "And to whom sware he that they should not enter into his rest, but to them that believed not?"

(Hebrews 3:19) "So we see that they could not enter in because of unbelief"