Hebrews 3:7-10 NIV

[7] So, as the Holy Spirit says: “Today, if you hear his voice, [8] do not harden your hearts as you did in the rebellion, during the time of testing in the wilderness, [9] where your ancestors tested and tried me, though for forty years they saw what I did. [10] That is why I was angry with that generation; I said, ‘Their hearts are always going astray, and they have not known my ways.’