In the Bible, having a “hard heart” puts a person in dangerous company. At various places, authors in Scripture use this phrase to indicate a lack of compassion (Mark 3:5), a refusal to repent (2 Chronicles 36:13), and a destiny full of the wrath of God (Romans 2:5). One of the characters in Scripture most often described as hardening his heart is the Egyptian Pharaoh who faced off with Moses (Exodus 8:32).
So, when an epistle tells us how to avoid or prevent a hard heart, we should take notice!
Beware of a Hard Heart
The subject of Hebrews 3:7–19 must be related to obedience, hearts, and hardening. The word “hard” or “harden” occurs three times, “heart” occurs four times, and there are four references to sin, disobedience, or unbelief.
The author of this letter uses as an example the generation of Israelites who exited Egypt with Moses. But this is not a positive example! Christians are NOT to be like them (Hebrews 3:8,15).
A hard heart is not just unacceptable in polite society. It has dire, terrible consequences, including the wrath of God.
Therefore I was provoked with that generation,
and said, ‘They always go astray in their heart;
they have not known my ways.’
As I swore in my wrath,
‘They shall not enter my rest.’ (Hebrews 3:10–11)
A hard, unbelieving heart will lead people to “fall away from the living God” (Hebrews 3:12). God will deny them access to his rest. There are eternal consequences to a hard heart.
Hard Hearts and Sin
A hard heart is dangerous because it leads to sin. It may indicate blindness to or apathy about obeying and loving the Lord.
In this passage, the author quotes Psalm 95:7–11, which refers to Exodus 17:1–7. The Israelites, despite having just seen God deliver them miraculously from the Egyptians, “quarreled” with Moses and complained about a lack of water. They accused Moses of taking them out of Egypt only to kill them in the wilderness. Moses thought the people might stone him, and the people questioned God’s promise to go with them, asking “Is the Lord among us or not?”
Hebrews 3:16–19 emphasizes that hard hearts lead to sin. Those Israelites “rebelled,” “sinned,” and were “disobedient.” They were unable to enter God’s rest because of unbelief.
A Powerful Antidote
The author of Hebrews does not want this end for those reading his words.
Take care, brothers, lest there be in any of you an evil, unbelieving heart, leading you to fall away from the living God. But exhort one another every day, as long as it is called “today,” that none of you may be hardened by the deceitfulness of sin. For we have come to share in Christ, if indeed we hold our original confidence firm to the end. (Hebrews 3:12–14)
How do we prevent an evil, unbelieving heart? How do we avoid falling away from the living God? How do we prevent a hardening by the deceitfulness of sin? We exhort one another, every day.
A person filled with a certain kind of zeal might seize on the word “exhort” and go hunting for sin in other Christians’ lives. But exhort is not quite the same as rebuke, though an exhortation might include rebuke. This command is written to communities of Christians, and these brotherly and sisterly exhortations are to be grounded in knowledge of one another. The best exhortation contains exactly the timely encouragement, challenge, chastisement, and pointers to the promises of God that the other person needs. An obvious but challenging implication of this is that we must get to know each other well enough to know what exhortation is fitting.
Every Day
A person might be able to get behind the idea of occasional exhortation of their Christian friends. But the author of Hebrews is insistent that this happen frequently—”every day,” and “as long as it is called ‘today.'”
Why do we need such regular exhortation? Because we forget! As we have seen above, the same people who crossed on dry ground through the Red Sea accused God of abandoning them a short time later. We are fallible and finite and prone to forgetfulness, so we need to be spurred on by our brothers and sisters.
We Share in Christ
As we remind each other who God is and what he has done, we help to prevent the evil, unbelieving hearts that are ready to sprout within us. This is a vital community effort.
We “have come to share in Christ,” after all. He is not just the Savior and Lord and Redeemer of individuals, but of a collective people. As we share in Christ, we belong to one another. We have this privilege and vital responsibility to speak life-giving truths to our brothers and sisters.
