Psalms 95:8-11

Harden not your heart, as at Meribah, As in the day of Massah in the wilderness; When your fathers tempted me, Proved me, and saw my work. Forty years long was I grieved with that generation, And said, It is a people that do err in their heart, And they have not known my ways: Wherefore I sware in my wrath, That they should not enter into my rest.