Hebrews 3:19 WEB

¹⁷  With whom was he displeased forty years? Wasn't it with those who sinned, whose bodies fell in the wilderness?

¹⁸  To whom did he swear that they wouldn't enter into his rest, but to those who were disobedient?

¹⁹  We see that they were not able to enter in because of unbelief.