What does δεῖ (deî) mean in the Bible?
Δεῖ is an impersonal Greek verb that often carries the sense it is necessary, it must happen, or one ought to act. Sometimes the necessity is ordinary obligation.
Greek · G1163
δεῖ
Be necessary
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δεῖ G1163
Pronunciation deî
What does δεῖ (deî) mean in the Bible?
Δεῖ is an impersonal Greek verb that often carries the sense it is necessary, it must happen, or one ought to act. Sometimes the necessity is ordinary obligation.
Reader summary
Full entry for δεῖ (G1163) · Open the biblical lexicon
Questions this entry answers
How does the BSB render G1163?
The BSB source-word alignment has 102 aligned rows for this entry. Common renderings include must (49), ought (4), should (4), had to (3), You should have (3).
Where does δεῖ (deî) appear in Scripture?
The source-word alignment first shows this entry at Matthew 16:21. Its strongest book concentrations include Acts (22), Luke (18), John (10), Matthew (8).
Are there verse guides for δεῖ (deî)?
This entry includes 1 verse guide that explain exact original-language forms in context.
What This Word Actually Means
Δεῖ is an impersonal Greek verb that often carries the sense it is necessary, it must happen, or one ought to act. Sometimes the necessity is ordinary obligation. In other passages, especially around Jesus' suffering, resurrection, mission, and judgment, the word marks what must happen in God's plan.
Pastorally, this word teaches readers to ask what kind of necessity the passage is naming. Matthew 16:21 does not describe tragic accident but the necessary path of the Messiah. Acts 5:29 names obedience that must answer to God. The word can open doctrine, but only when the passage supplies the divine purpose.
How the Bible Uses It
Dei is currently represented in the local BSB source-word alignment with about 102 aligned occurrences. It often marks necessity, obligation, or what must take place in context.
- Matt.16.21
From that time on Jesus began to show His disciples that He must go to Jerusalem and suffer many things at the hands of the elders, chief priests, and scribes, and that He must be killed and on the third day be raised to life.
Jesus begins to show His disciples that He must suffer, be killed, and be raised. The word serves messianic necessity in the passion prediction.
- John.3.7
Do not be amazed that I said, ‘You must be born again.’
Jesus tells Nicodemus that he must be born again or from above. The word serves necessity in the new-birth discourse.
- Acts.5.29
But Peter and the other apostles replied, “We must obey God rather than men.
The apostles say they must obey God rather than men. The word serves moral obligation before God.
- 1Cor.15.25
For He must reign until He has put all His enemies under His feet.
Christ must reign until He has put all His enemies under His feet. The word serves eschatological necessity.
- 2Cor.5.10
For we must all appear before the judgment seat of Christ, that each one may receive his due for the things done in the body, whether good or bad.
All must appear before the judgment seat of Christ. The word serves universal accountability.
Source Word Evidence
BSB source-word alignment connects this entry to exact verse rows, English rendering, source form, transliteration, and parsing.
How English Renders It must 49× Matthew 17:10, Matthew 24:6, Mark 8:31, Mark 9:11
ought 4× Acts 19:36, Acts 24:19, Acts 25:10, 2 Peter 3:11
should 4× Matthew 25:27, Luke 13:16, Ephesians 6:20, Colossians 4:4
had to 3× John 20:9, Acts 1:16, Acts 17:3
You should have 3× Matthew 23:23, Luke 11:42, Acts 27:21
had 2× Luke 2:49, John 4:4
He must 2× Matthew 16:21, 1 Timothy 3:7
I have to 2× Matthew 26:35, Mark 14:31
I must 2× 2 Corinthians 11:30, 2 Corinthians 12:1
they should 2× 1 Timothy 5:13, Titus 1:11
vvv 2× Acts 5:29, Colossians 4:6
- 1× 1 Thessalonians 4:1
. . . 1× Luke 13:14
[ These things ] must 1× Mark 13:7
[one] must 1× John 4:20
[that] he ought 1× Acts 25:24
due 1× Romans 1:27
each one must 1× 1 Timothy 3:15
have had 1× 1 Peter 1:6
he ought 1× 1 Corinthians 8:2
I ought 1× Acts 26:9
it is necessary [to choose] 1× Acts 1:21
it must 1× Matthew 26:54
it should not be 1× Mark 13:14
it was fitting 1× Luke 15:32
need 1× Luke 18:1
ought {to make} 1× 2 Corinthians 2:3
should be 1× 2 Timothy 2:6
Shouldn’t 1× Matthew 18:33
than you ought 1× Romans 12:3
there must 1× 1 Corinthians 11:19
Was it not necessary for 1× Luke 24:26
was to 1× Luke 22:7
we must 1× Acts 20:35
we ought 1× Romans 8:26
would have had 1× Hebrews 9:26
you ought 1× 2 Thessalonians 3:7
you should 1× Luke 12:12
Show sample aligned rows
Matthew 16:21 δεῖ to He must Verb - Present Indicative Active - 3rd Person Singular Matthew 17:10 δεῖ to must Verb - Present Indicative Active - 3rd Person Singular Matthew 18:33 ἔδει to Shouldn’t Verb - Imperfect Indicative Active - 3rd Person Singular Matthew 23:23 ἔδει to You should have Verb - Imperfect Indicative Active - 3rd Person Singular Matthew 24:6 δεῖ to must Verb - Present Indicative Active - 3rd Person Singular Matthew 25:27 ἔδει to should Verb - Imperfect Indicative Active - 3rd Person Singular Matthew 26:35 δέῃ to I have to Verb - Present Subjunctive Active - 3rd Person Singular Matthew 26:54 δεῖ to it must Verb - Present Indicative Active - 3rd Person Singular Mark 8:31 δεῖ to must Verb - Present Indicative Active - 3rd Person Singular Mark 9:11 δεῖ to must Verb - Present Indicative Active - 3rd Person Singular
Usage map
A compact distribution from source-word alignment before the full evidence tables.
First aligned row Matthew 16:21
Aligned rows 102
Books represented 19
Matthew 8 Mark 6 Luke 18 John 10 Acts 22 Romans 3 1 Corinthians 4 2 Corinthians 4 Ephesians 1 Colossians 2 1 Thessalonians 1 2 Thessalonians 1 1 Timothy 4 2 Timothy 2 Titus 3 Hebrews 3 1 Peter 1 2 Peter 1 Revelation 8
Source forms
δεῖ 71x dei Matthew 16:21, Matthew 17:10, Matthew 24:6, Matthew 26:54
ἔδει 14x edei Matthew 18:33, Matthew 23:23, Matthew 25:27, Luke 11:42
Δεῖ 6x Dei Luke 9:22, John 3:7, Acts 1:21, Acts 15:5
δεῖν 3x dein Luke 18:1, Acts 25:24, Acts 26:9
δέῃ 2x deē Matthew 26:35, Mark 14:31
δέον 2x deon Acts 19:36, 1 Peter 1:6
Ἔδει 2x Edei John 4:4, Acts 27:21
〈δεῖ〉 1x dei Revelation 13:10
Parsing patterns
Verb - Present Indicative Active - 3rd Person Singular 78x Matthew 16:21, Matthew 17:10, Matthew 24:6, Matthew 26:54
Verb - Imperfect Indicative Active - 3rd Person Singular 16x Matthew 18:33, Matthew 23:23, Matthew 25:27, Luke 11:42
Verb - Present Infinitive Active 3x Luke 18:1, Acts 25:24, Acts 26:9
Verb - Present Participle Active - Nominative Neuter Singular 2x Acts 19:36, 1 Peter 1:6
Verb - Present Subjunctive Active - 3rd Person Singular 2x Matthew 26:35, Mark 14:31
Verb - Present Participle Active - Accusative Neuter Plural 1x 1 Timothy 5:13
Using This Word Well
Be careful not to...
- Ask whether the passage names divine plan, moral obligation, practical fittingness, or final accountability.
Avoid claiming...
- Do not claim every use of dei carries the same theological weight.
- Do not reduce divine necessity texts to human accident or mere prediction.
Key Verse and Form Guides
Verse-level guides showing how this original-language form works in its specific context, including grammar, verse function, and guarded interpretation.
Evidence Summary
Messiah
Greek word. Logical necessity or divine imperative, distinct from moral obligation expressed by ὀφείλει
Source Gloss
be necessary
Greek Text Appearances
Textus Receptus witness, full corpus Greek token appearances from Scrivener 1894 Textus Receptus in the full New Testament corpus.
16 of 105 Greek text appearances shown. Linked morphology labels have verse guides.
Matthew 16:21 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Matthew 17:10 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Matthew 18:33 Verb Third Person Singular Imperfect Active Indicative
ἔδει edei
it is necessary, inevitable
Read verse Matthew 23:23 Verb Third Person Singular Imperfect Active Indicative
ἔδει edei
it is necessary, inevitable
Read verse Matthew 24:6 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Matthew 25:27 Verb Third Person Singular Imperfect Active Indicative
ἔδει edei
it is necessary, inevitable
Read verse Matthew 26:35 Verb Third Person Singular Present Active Subjunctive
δέῃ deh
it is necessary, inevitable
Read verse Matthew 26:54 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Mark 8:31 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Mark 9:11 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Mark 13:7 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Mark 13:10 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Mark 13:14 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Mark 14:31 Verb Third Person Singular Present Active Subjunctive
δέῃ deh
it is necessary, inevitable
Read verse Luke 2:49 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verse Luke 4:43 Verb Third Person Singular Present Active Indicative
δεῖ dei
it is necessary, inevitable
Read verseFull New Testament corpus: 260 chapters, 7,957 verses, 140,628 tokens. Data source: honza/textus-receptus (data only), with authority check against byztxt/greektext-textus-receptus.
Discourse Aspect
How this verb appears across 16 occurrences in the NT discourse index (MACULA Greek SBLGNT).
Aspect
Tense
imperfect 16
Voice
active 16
Mood
indicative 16
NT Occurrences
Matthew 18:33 ἔδει imperfect active indicative background Matthew 23:23 ἔδει imperfect active indicative background Matthew 25:27 ἔδει imperfect active indicative background Luke 11:42 ἔδει imperfect active indicative background Luke 13:16 ἔδει imperfect active indicative background Luke 15:32 ἔδει imperfect active indicative background Luke 22:7 ἔδει imperfect active indicative background Luke 24:26 ἔδει imperfect active indicative background John 4:4 ἔδει imperfect active indicative background Acts 1:16 ἔδει imperfect active indicative background Acts 17:3 ἔδει imperfect active indicative background Acts 24:19 ἔδει imperfect active indicative background Acts 27:21 Ἔδει imperfect active indicative background Romans 1:27 ἔδει imperfect active indicative background 2 Corinthians 2:3 ἔδει imperfect active indicative background Hebrews 9:26 ἔδει imperfect active indicative background
Aspect reflects grammatical form — not authorial emphasis. Participles and infinitives are verbal adjectives and nouns respectively.
Clause data: MACULA Greek (Clear Bible, CC BY 4.0) · SBLGNT (Logos/SBL, CC BY 4.0)
Sampled Scripture Occurrences
Representative Scripture witnesses for this entry: passage, original form, and sense in context.
New Testament Witnesses
It was required or divinely necessary.
It is necessary.
it is necessary
it is necessary
it is necessary
it is necessary
Additional Occurrences
Luke 19:1–10 δεῖ deî
It is necessary
Luke 24:1–12 δεῖ deî
It is necessary
Word Origins
δεῖ is built from this root:
Why This Word Matters
Expresses divine necessity. Acts 17:1-9
Reveals divine necessity in Christ’s mission. Acts 23:11-22
Indicates divine decree behind Christ’s suffering. John 3:22–36
Expresses divine necessity in the Messiah’s suffering. Luke 19:1–10
Reveals divine mission imperative. Luke 22:35–38
Expresses divine necessity rooted in God’s redemptive plan. Luke 24:13–35
Expresses divine necessity of Christ’s exaltation.
Affirms that Christ’s suffering and resurrection were part of God’s redemptive plan.
Indicates divine necessity in Paul’s journey to Rome.
Canonical Themes
Messiah
Part of These Phrases
Compound and idiomatic phrases that include this word. Follow a link to study the phrase and how its parts work together.
For the Preacher and Teacher
Dei names what is necessary or ought to happen. The context decides whether the necessity is moral, practical, or bound to God's saving plan.
Anchor passage
Matt.16.21
Doctrinal connections
- πάσχω: suffer, related to Matthew 16:21.
- βασιλεύω: reign, related to 1 Corinthians 15:25.
- κρίμα: judgment, related to 2 Corinthians 5:10.
The impersonal verb often works with an infinitive. Its force comes from the action that must happen and the reason supplied by the context.
From Old to New Testament
Dei marks necessity or obligation. Its theological force depends on whether the context names God's plan, moral duty, eschatological outcome, or ordinary fittingness.
Sources
MorphGNT Strong's Dictionary XML — CC0 1.0 Public Domain
Open Scriptures Hebrew Bible (morphhb/OSHB) — CC BY 4.0
Open Scriptures Hebrew Lexicon — CC BY 4.0
Berean Standard Bible (BSB) source-word alignment - CC0 Public Domain