Hebrews 3:16-19

16For some, when they had heard, did provoke: yet not all that came out of Egypt by Moses. 17But with whom was he grieved forty years? was it not with them that had sinned, whose bodies fell in the wilderness? 18And to whom did he swear that they should not enter into his rest, but to them that believed not? 19So we see that they could not enter in because of unbelief.