Psalm 95:8-11 KJV
Harden not your heart,
As in the provocation, and as in the day of temptation in the wilderness:
When your fathers tempted me,
Proved me, and saw my work.
Forty years long was I grieved with this generation,
And said, It is a people that do err in their heart, and they have not known my ways:
Unto whom I sware in my wrath
That they should not enter into my rest.