So, as the Holy Spirit says:

“Today, if you hear his voice, 
    do not harden your hearts
as you did in the rebellion,
    during the time of testing in the wilderness,
 where your ancestors tested and tried me,
    though for forty years they saw what I did.
 That is why I was angry with that generation;
    I said, ‘Their hearts are always going astray,
    and they have not known my ways.’
 So I declared on oath in my anger,
    ‘They shall never enter my rest.’ ”