What does ἱλαστήριον (hilastḗrion) mean in the Bible?
G2435 occurs twice. Hebrews 9:5 uses it for the mercy seat overshadowed by the cherubim above the ark.
Greek · G2435
ἱλαστήριον
Propitiation
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ἱλαστήριον G2435
Pronunciation hilastḗrion
What does ἱλαστήριον (hilastḗrion) mean in the Bible?
G2435 occurs twice. Hebrews 9:5 uses it for the mercy seat overshadowed by the cherubim above the ark.
Reader summary
Full entry for ἱλαστήριον (G2435) · Open the biblical lexicon
Questions this entry answers
How does the BSB render G2435?
The BSB source-word alignment has 2 aligned rows for this entry. Common renderings include [as an] atoning sacrifice (1), mercy seat (1).
Where does ἱλαστήριον (hilastḗrion) appear in Scripture?
The source-word alignment first shows this entry at Romans 3:25. Its strongest book concentrations include Hebrews (1), Romans (1).
Are there verse guides for ἱλαστήριον (hilastḗrion)?
This entry includes 1 verse guide that explain exact original-language forms in context.
What This Word Actually Means
G2435 occurs twice. Hebrews 9:5 uses it for the mercy seat overshadowed by the cherubim above the ark. Romans 3:25 says that God presented Christ as an atoning sacrifice in His blood through faith to demonstrate God's righteousness. The two texts create a strong mercy-seat and atonement relationship, but faithful explanation should preserve what each passage explicitly says.
Hebrews names the tabernacle object while postponing detailed discussion. Romans names God's action, Christ, blood, faith, forbearance, and righteousness. Translators and interpreters differ over how fully Romans evokes the mercy seat and how best to render the term. The two-use corpus supports atonement centered on God's provision in Christ without requiring one word to resolve every dimension of the doctrine.
How the Bible Uses It
The complete G2435 corpus consists of Christ presented in Romans 3:25 and the mercy seat named in Hebrews 9:5. The shared term warrants comparison, while the two passages retain distinct syntax and argument.
- Rom.3.25
God presented Him as an atoning sacrifice in His blood through faith, in order to demonstrate His righteousness, because in His forbearance He had passed over the sins committed beforehand.
The verse makes God the initiator and ties the atoning provision to Christ's blood, faith, and the demonstration of divine righteousness.
- Heb.9.5
Above the ark were the cherubim of glory, overshadowing the mercy seat. But we cannot discuss these things in detail now.
Here G2435 directly names the mercy seat within the tabernacle description.
Passage context
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 [as an] atoning sacrifice 1× Romans 3:25
mercy seat 1× Hebrews 9:5
Show sample aligned rows
Usage map
A compact distribution from source-word alignment before the full evidence tables.
First aligned row Romans 3:25
Aligned rows 2
Books represented 2
Romans 1 Hebrews 1
Source forms
ἱλαστήριον 2x hilastērion Romans 3:25, Hebrews 9:5
Parsing patterns
Noun - Accusative Neuter Singular 2x Romans 3:25, Hebrews 9:5
Using This Word Well
Be careful not to...
- Present atonement as God's gracious provision in Christ and keep faith, blood, and righteousness in the Romans sentence.
- Acknowledge the mercy-seat relationship without pretending every translation question is settled.
Avoid claiming...
- Do not claim G2435 occurs beyond Romans 3:25 and Hebrews 9:5.
- Do not claim the Father is a reluctant opponent whom the Son persuades to become merciful.
- Do not claim this one term supplies a complete doctrine of atonement.
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
Greek word. God's instrument for turning away wrath through atoning sacrifice, not merely covering sin
Source Gloss
propitiation
Greek Text Appearances
Textus Receptus witness, full corpus Greek token appearances from Scrivener 1894 Textus Receptus in the full New Testament corpus.
2 Greek text appearances shown. Linked morphology labels have verse guides.
ilasthrion
a sin offering, covering
Read verse Hebrews 9:5 Noun Accusative Singular Neuter
ἱλαστήριον· ilasthrion
a sin offering, covering
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.
Grammatical Forms
How this word appears across different grammatical cases and numbers.
This word appears as a noun across 1 case and number pattern. The form changes show how the word functions in a sentence; they do not change the basic lexical meaning by themselves.
Form patterns 1 Aligned forms 2 Case pattern Accusative (2) Number pattern Singular (2)
Where It Appears in Scripture
Where this word appears in Scripture: passage, original form, and sense in context.
New Testament Witnesses
mercy seat
Propitiation, atoning sacrifice, mercy seat.
Word Origins
ἱλαστήριον is built from this root:
Why This Word Matters
It identifies Christ’s death as the means by which God’s wrath is satisfied and justice upheld. Hebrews 9:1-10
Anticipates Christ's propitiatory sacrifice. Romans 3:21-26
Canonical Themes
For the Preacher and Teacher
G2435 offers a rich but narrow two-text bridge. Hebrews 9:5 gives the concrete mercy-seat reference. Romans 3:25 places the same term in a sentence where God presents Christ in His blood through faith to demonstrate righteousness. That connection invites teachers to explain atonement as God's own provision rather than a human attempt to make God favorable. It also calls for restraint.
Romans must be taught with its surrounding claims about universal sin, free justification, redemption, faith, forbearance, and God's justice. Hebrews explicitly says it cannot discuss the sanctuary objects in detail at that point. The word can illuminate the relationship between mercy, blood, access, and righteousness, but it should not be used to pit the Father against the Son, erase interpretive alternatives, or make one lexical item carry the whole doctrine of the cross.
Anchor passage
Rom.3.25
Doctrinal connections
- Rom.3.21-26 - righteousness, sin, grace, redemption, blood, faith, and justification govern the term.
- Heb.9.1-10 - the mercy seat belongs to the earthly sanctuary description and its limitations.
- Heb.9.11-14 - Christ's greater priestly ministry and blood follow in the chapter's argument.
- Lev.16.14-16 - blood at the mercy seat supplies key canonical background.
- G2433 - The related two-use verb has its own lexical boundary.
- 1Jn.2.2 - a related noun should be treated as a canonical parallel, not another G2435 occurrence.
Both G2435 forms are accusative singular. Hebrews uses the term substantivally for the mercy seat. Romans permits atoning-sacrifice, atoning-means, and mercy-seat-informed readings, so the lexical relationship is clear while the best English rendering remains interpretively discussed.
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