King James Version

What Does John 12:40 Mean?

John 12:40 in the King James Version says “He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with thei... — study this verse from John chapter 12 with commentary, cross-references, and original Greek word analysis.

He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.

John 12:40 · KJV


Context

38

That the saying of Esaias the prophet might be fulfilled, which he spake, Lord, who hath believed our report? and to whom hath the arm of the Lord been revealed?

39

Therefore they could not believe, because that Esaias said again,

40

He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.

41

These things said Esaias, when he saw his glory, and spake of him.

42

Nevertheless among the chief rulers also many believed on him; but because of the Pharisees they did not confess him, lest they should be put out of the synagogue:


Commentary

KJV Study Commentary
John quotes Isaiah 6:10, describing divine blinding and hardening that prevents conversion and healing. God actively blinds eyes and hardens hearts as judgment on persistent rebellion. The 'lest' clauses show God prevents their conversion, raising the mystery of divine election. This isn't arbitrary cruelty but righteous judgment: they wouldn't see, so God ensures they can't see. The hardening makes permanent their chosen rebellion. This demonstrates that salvation requires divine initiative; human will alone cannot produce faith. Only those whom God heals can be converted.

KJV Study — Public Domain

Historical & Cultural Context

Isaiah 6 records the prophet's commission to preach to those whom God had already judicially hardened. This same pattern applies to Jesus' ministry—many heard but few believed.

Reflection Questions

  1. How does divine hardening demonstrate God's righteous judgment on persistent unbelief?
  2. What does this teach about the necessity of divine grace for salvation?
  3. In what ways does this text challenge Arminian free will theology?

Original Language Analysis

Greek · 23 words
Τετύφλωκεν1 of 23

He hath blinded

G5186

to make blind, i.e., (figuratively) to obscure

αὐτούς2 of 23

their

G846

the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons

τοὺς3 of 23
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

ὀφθαλμοῖς4 of 23

eyes

G3788

the eye (literally or figuratively); by implication, vision; figuratively, envy (from the jealous side-glance)

καὶ5 of 23

and

G2532

and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words

πεπώρωκεν6 of 23

hardened

G4456

to petrify, i.e., (figuratively) to indurate (render stupid or callous)

αὐτούς7 of 23

their

G846

the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons

τὴν8 of 23
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

καρδίᾳ9 of 23

heart

G2588

the heart, i.e., (figuratively) the thoughts or feelings (mind); also (by analogy) the middle

ἵνα10 of 23
G2443

in order that (denoting the purpose or the result)

μὴ11 of 23
G3361

(adverb) not, (conjunction) lest; also (as an interrogative implying a negative answer (whereas g3756 expects an affirmative one)) whether

ἴδωσιν12 of 23

see

G1492

used only in certain past tenses, the others being borrowed from the equivalent g3700 and g3708; properly, to see (literally or figuratively); by impl

τοῖς13 of 23
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

ὀφθαλμοῖς14 of 23

eyes

G3788

the eye (literally or figuratively); by implication, vision; figuratively, envy (from the jealous side-glance)

καὶ15 of 23

and

G2532

and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words

νοήσωσιν16 of 23

understand

G3539

to exercise the mind (observe), i.e., (figuratively) to comprehend, heed

τῇ17 of 23
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

καρδίᾳ18 of 23

heart

G2588

the heart, i.e., (figuratively) the thoughts or feelings (mind); also (by analogy) the middle

καὶ19 of 23

and

G2532

and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words

ἐπιστραφῶσιν20 of 23

be converted

G1994

to revert (literally, figuratively or morally)

καὶ21 of 23

and

G2532

and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words

ἰάσωμαι22 of 23

I should heal

G2390

to cure (literally or figuratively)

αὐτούς23 of 23

their

G846

the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons


Study Guide

Historical Context

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

Theological Significance

John 12:40 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 John 12:40 from Treasury of Scripture Knowledge

Test Your Knowledge

Continue Your Study