Hebrews 3:8-11 Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:

KJV⁽ⁱ⁾ ⁸ Harden not your hearts, as in the provocation, in the day of temptation in the wilderness: ⁹ When your fathers tempted me, proved me, and saw my works forty years. ¹⁰ Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways. ¹¹ So I sware in my wrath, They shall not enter into my rest.)