Hebrews 3:8 KJV
Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:
Hebrews 3:6–10 KJV Chapter Context
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But Christ as a son over his own house; whose house are we, if we hold fast the confidence and the rejoicing of the hope firm unto the end.
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Wherefore (as the Holy Ghost saith, To day if ye will hear his voice,
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Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:
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When your fathers tempted me, proved me, and saw my works forty years.
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Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways.