King James Version

What Does Jeremiah 17:10 Mean?

Jeremiah 17:10 in the King James Version says “I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit o...” — study this verse from Jeremiah chapter 17 with commentary, cross-references, and original Hebrew word analysis.

“I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings.”

Jeremiah 17:10 · KJV

Context

8

For he shall be as a tree planted by the waters, and that spreadeth out her roots by the river, and shall not see when heat cometh, but her leaf shall be green; and shall not be careful in the year of drought, neither shall cease from yielding fruit. drought: or, restraint

9

The heart is deceitful above all things, and desperately wicked: who can know it?

10

I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings.

11

As the partridge sitteth on eggs, and hatcheth them not; so he that getteth riches, and not by right, shall leave them in the midst of his days, and at his end shall be a fool. sitteth: or, gathereth young which she hath not brought forth

12

A glorious high throne from the beginning is the place of our sanctuary.

Read Jeremiah 17 full chapter

Commentary

KJV Study Commentary
After the devastating diagnosis of verse 9, God declares His omniscience and justice. "I the LORD search the heart" uses choqer (חֹקֵר), meaning to examine thoroughly, investigate deeply, or probe. God's knowledge is not superficial observation but penetrating insight into motives, thoughts, and desires. "I try the reins" (kidneys, kelayot, כְּלָיוֹת) refers to testing the deepest seat of emotions and conscience.

The purpose clause "to give every man according to his ways, and according to the fruit of his doings" establishes God's perfect justice. Derachim (ways) refers to one's habitual course of life, while "fruit of his doings" emphasizes that actions produce consequences. God's judgment is neither arbitrary nor based on external religious performance but on the heart's true condition as manifested in life patterns.

This verse grounds divine judgment in perfect knowledge. God alone can judge righteously because only He knows the heart completely (1 Sam 16:7, 1 Kgs 8:39). This should terrify the hypocrite and comfort the genuinely repentant. Christ will judge the secrets of men (Rom 2:16), rendering judgment based on perfect knowledge of hearts. Yet for believers, this omniscient Judge has also borne their judgment (Isa 53:5-6), transforming terror into assurance.

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Historical & Cultural Context

Ancient justice systems relied on external evidence, witness testimony, and oaths—all subject to deception and manipulation. The prophets consistently emphasized that God judges differently, seeing beneath religious externalism to covenant loyalty or rebellion. This divine prerogative to judge hearts became central to biblical ethics and eschatology, anticipating the final judgment where all secrets will be revealed (Eccl 12:14, Matt 12:36, Rev 20:12).

Reflection Questions

  1. How does knowing that God searches your heart affect your approach to private thoughts, hidden sins, and secret motivations?
  2. In what ways does this verse challenge the tendency to judge ourselves by intentions while others judge us by actions?
  3. How should the reality of divine omniscience shape both our fear of judgment and our confidence in grace?

Original Language Analysis

Hebrew · 11 words
אֲנִ֧י1 of 11
H589

i

יְהוָ֛ה2 of 11

“I the LORD”

H3068

(the) self-existent or eternal; jeho-vah, jewish national name of god

חֹקֵ֥ר3 of 11

“search”

H2713

properly, to penetrate; hence, to examine intimately

לֵ֖ב4 of 11

“the heart”

H3820

the heart; also used (figuratively) very widely for the feelings, the will and even the intellect; likewise for the center of anything

בֹּחֵ֣ן5 of 11

“I try”

H974

to test (especially metals); generally and figuratively, to investigate

כְּלָי֑וֹת6 of 11

“the reins”

H3629

a kidney (as an essential organ); figuratively, the mind (as the interior self)

וְלָתֵ֤ת7 of 11

“even to give”

H5414

to give, used with greatest latitude of application (put, make, etc.)

לְאִישׁ֙8 of 11

“every man”

H376

a man as an individual or a male person; often used as an adjunct to a more definite term (and in such cases frequently not expressed in translation)

כִּדְרָכָ֔ו9 of 11

“according to his ways”

H1870

a road (as trodden); figuratively, a course of life or mode of action, often adverb

כִּפְרִ֖י10 of 11

“and according to the fruit”

H6529

fruit (literally or figuratively)

מַעֲלָלָֽיו׃11 of 11

“of his doings”

H4611

an act (good or bad)

Study Guide

Historical Context

This verse is found in the book of Jeremiah. Understanding the historical and cultural background helps illuminate its meaning for the original audience and for us today.

Theological Significance

Jeremiah 17:10 contributes to our understanding of God's character and His relationship with humanity. Consider how this verse connects to the broader themes of Scripture.

Cross-References

Verses related to Jeremiah 17:10 from Treasury of Scripture Knowledge

1 Samuel 16:7Romans 8:27Jeremiah 11:20Hebrews 4:12-13Revelation 2:23Psalms 139:23-24

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