For the phrase “O that today you would listen to his voice! Do not harden your hearts, as at Meribah, as on the day at Massah in the wilderness, when your ancestors tested me, and put me to the proof, though they had seen my work. For forty years I loathed that generation and said, ‘They are a people whose hearts go astray, and they do not regard my ways.’ Therefore in my anger I swore, ‘They shall not enter my rest.'” see Hebrews 3:7, Hebrews 3:8, Hebrews 3:9, Hebrews 3:10, and Hebrews 3:11.

Note that this quote in the New Testament is not taken from the Hebrew Bible but from the Greek Septuagint (LXX) which translates into English as “Today if you hear his voice, do not harden your hearts, as at the embittering, like the day of the trial in the wilderness, where your fathers tried; they put to the proof and saw my works. For forty years I loathed that generation, and said, ‘Always do they stray in heart, and they did not know my ways.’ As I swore in my wrath, ‘If they shall enter into my rest!'” (Translation by NETS — for the Greek version see the title’s tooltip)