Jeanne-Marie Bouvier de la Motte-Guyon (1648 – 1717) is best known for her writings on prayer. Less well known is that she dictated a commentary on the whole Bible, only published in 1790, several decades after her death (La Sainte Bible avec des explications et refléxions qui regardent la vie intérieure, 20 vols. [Paris: Libraires Associés]). As its title indicates, it is a kind of “spiritual” commentary, concerned with the interior spiritual life. These are her comments on Hebrews 3:7-8, “Therefore, as the Holy Spirit says, ‘Today, if you hear his voice, do not harden your hearts as in the rebellion, on the day of testing in the wilderness.‘”
My God! how wonderful this passage of scripture is! In order that we might be the house of God [Heb 3:6], that he would lead and govern us as a sovereign, we must surrender ourselves to this condition, that is, if we hear his voice today. This word today means the present moment, in such a way that in all moments we must be attentive to the voice of God.
The one who does not hear the voice of God when he speaks hardens their heart. All evils that happen to us stem from not hearing the voice of God, just as everything good comes from hearing it. All the principles of the Christian and spiritual life boil down to this alone, hearing the voice of God. The one who is faithful to hear this voice hears it infallibly; and the one who hears this voice and is teachable in obeying it, their soul moreover becomes the house of God in which he commands as sovereign. But the one who does not want to hear the voice of God hardens their heart bit by bit such that it becomes no longer susceptible of inspiration. This voice is so gentle, so tranquil and profound, that one must ever keep watch over one’s heart, and by a gentle attentiveness to what is within oneself, one listens, one hears, one tastes this speech, silent and eloquent all at once.
— La Sainte Bible avec des explications et refléxions qui regardent la vie intérieure, vol. 18 (Paris: Libraires Associés, 1790), 728-29.