Context Matters: The Heart is Deceitful Above All Things

Perhaps you’ve heard that our hearts are deceitful, wicked, and sick beyond all cure. You’ve been taught that our desires should always be questioned and our impulses should always be doubted. Anything we want—because that want blooms in our heart—should be suspect.

This is no inspirational teaching, so you won’t spot it on posters or mugs. But I see this verse dashed into arguments like salt in soup. Are we using using this verse properly? When we learn to read the Bible like a book and not as isolated bullet points, we’ll see that some familiar phrases don’t mean all that we’ve always assumed.

The Immediate Context

The verse in question is found in Jeremiah 17:9. Here it is with some surrounding context.

Thus says the Lord:
“Cursed is the man who trusts in man
and makes flesh his strength,
whose heart turns away from the Lord.
He is like a shrub in the desert,
and shall not see any good come.
He shall dwell in the parched places of the wilderness,
in an uninhabited salt land.

Blessed is the man who trusts in the Lord,
whose trust is the Lord.
He is like a tree planted by water,
that sends out its roots by the stream,
and does not fear when heat comes,
for its leaves remain green,
and is not anxious in the year of drought,
for it does not cease to bear fruit.”

The heart is deceitful above all things,
and desperately sick;
who can understand it?
“I the Lord search the heart
and test the mind,
to give every man according to his ways,
according to the fruit of his deeds.” (Jeremiah 17:5–10)

We first observe the connection between a man’s heart and his trust. A “man who trusts in man” is one whose “heart turns away from the Lord” (Jer 17:5). This man is cursed. In contrast, the man is blessed who “trusts in the Lord,” and from the structure we infer that his heart does not turn from the Lord.

This connection is essential to a proper understanding of this passage, and it is evident throughout Jeremiah’s prophecy as well. (More on this later.) This is also true in the larger context of the Bible—the heart is not primarily the origin of feelings; it is the control center for trust and worship.

We further see that the question asked in verse 9 (“who can understand it?”) is answered in verse 10 (“I the Lord”). Even if man cannot know his own heart, the Lord understands it well enough to treat everyone “according to the fruit of [their] deeds” (Jer 17:10).

Before moving on, we should examine the paragraph just prior to this passage. God is speaking, and he says that “the sin of Judah” is “written on the tablet of their heart” (Jer 17:1). The children of Judah have altars and Asherim (wooden idol-worship poles) “beside every green tree and on the high hills, on the mountains in the open country” (Jer 17:2–3). Turning away from God involves both turning to other people and turning to idols.

The Broader Context

In Jeremiah 16, the Lord tells Jeremiah what he should say when others ask what sin the people have committed against God.

Because your fathers have forsaken me, declares the Lord, and have gone after other gods and have served and worshiped them, and have forsaken me and have not kept my law, and because you have done worse than your fathers, for behold, every one of you follows his stubborn, evil will, refusing to listen to me. (Jeremiah 16:11–12)

The primary way that God’s people rebelled against him in Jeremiah’s day was to forsake him, turning to and serving other gods. As we can see from earlier in this prophetic book, it is the people’s hearts that lead them astray.

• The “people [have] a stubborn and rebellious heart; they have turned aside and gone away.” They do not fear the Lord (Jer 5:23–24).
• The people “stubbornly followed their own hearts and have gone after the Baals, as their fathers taught them” (Jer 9:14).
• “This evil people, who refuse to hear my words, who stubbornly follow their own heart and have gone after other gods to serve them and worship them” (Jer 13:10).

There are numerous other examples in the first 16 chapters of Jeremiah which mention Israel’s idolatry and turning away from God. (Most of Jeremiah 10:1–16 is a contrast between the Lord and idols, showing just how ridiculous it is to prefer idols over God.)

Conclusion

Modern Christians like to seize upon the word “heart” in Jeremiah 17:9; they point it as an accusing finger and waive it as a grand caution flag. But this verse was written to a particularly idolatrous people in a specific time. Jeremiah had exhorted them repeatedly about the tendency of their hearts to prefer other gods to the Lord.

This does not mean that 21st century Christians are exempt from warning in this passage. God’s people were led by their hearts away from him before, and the same can (and does!) happen to us. We also must watch our desires, our trust, and our security. But this verse does not teach that we must be suspicious of our every thought or emotion.

Context matters.

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For more examples of why context matters, click here.