Tehillim 95:7-9

Orthodox Jewish Bible

⁷ For He is Eloheinu; and we are the people of His pasture, and the tzon of His yad. Today if ye will hear His voice,

⁸ Harden not your lev, as in Merivah, and as in the Yom Massah in the midbar;

⁹ When your avot tested Me, tried Me, and saw My work.