Lecture 2 — Harden not your hearts

Therefore, as the Holy Spirit says, Today, when you hear his voice,

do not harden your hearts as in the rebellion, on the day of testing in the wilderness,

where your fathers put me to the test and saw my works for forty years.

Therefore I was provoked with that generation, and said, "They always go astray in their hearts; they have not known my ways."

As I swore in my wrath, "They shall never enter my rest."