Psalm 95:8 in the King James Version
Harden not your heart, as in the provocation, and as in the day of temptation in the wilderness:
Context
7 for he is our God. We are the people of his pasture, and the sheep in his care. Today, oh that you would hear his voice!
8 Don’t harden your heart, as at Meribah, as in the day of Massah in the wilderness,
9 when your fathers tempted me, tested me, and saw my work.