Psalm 95:9

7For he is our God; and we are the people of his pasture, and the sheep of his hand. To day if ye will hear his voice,

8Harden not your heart, as in the provocation, and as in the day of temptation in the wilderness:

9When your fathers tempted me, proved me, and saw my work.

10Forty 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:

11Unto whom I sware in my wrath that they should not enter into my rest.