Hebrews 3:12 — “Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.” In Hebrews chapter 3 we are introduced to the concept of “rest.” The author writes about it by referring to the experience of the Children of Israel in the wilderness. What does it mean for the Christian? What does it have to do with the strong warning about having “an evil heart of unbelief?”