4378. proschusis
Lexical Summary
proschusis: Pouring out, libation

Original Word: προσχύσις
Part of Speech: Noun, Feminine
Transliteration: proschusis
Pronunciation: pros-KHOO-sis
Phonetic Spelling: (pros'-khoo-sis)
KJV: sprinkling
NASB: sprinkling
Word Origin: [from a comparative of G4314 (πρός - against) and cheo "to pour"]

1. a shedding forth, i.e. affusion

Strong's Exhaustive Concordance
sprinkling.

From a comparative of pros and cheo (to pour); a shedding forth, i.e. Affusion -- sprinkling.

see GREEK pros

NAS Exhaustive Concordance
Word Origin
from a comp. of pros and cheó (to pour)
Definition
a pouring upon
NASB Translation
sprinkling (1).

Thayer's Greek Lexicon
STRONGS NT 4378: πρόσχυσις

πρόσχυσις, προσχυσεως, (προσχέω to pour on), a pouring or sprinkling upon, affusion: τοῦ αἵματος, Hebrews 11:28. (Ecclesiastical writings (e. g. Justin Martyr, Apology 2, 12, p. 50 d.).)

Topical Lexicon
Definition and Core Idea

Strong’s Greek 4378 denotes the ritual “sprinkling” or “application” of blood in a sacrificial context. It conveys an act performed to secure divine protection or covenantal cleansing—never a casual gesture, but a deliberate, faith-filled ministry action that places the worshiper under God’s covering.

Old Testament Background

1. Exodus 12:1-13 records Israel’s first Passover, where lamb’s blood was applied to doorposts. The Hebrew verb occurs in the Septuagint as a cognate of 4378, linking the New Testament noun to the foundational act of deliverance.
2. Exodus 24:3-8 shows Moses sprinkling blood on the people and the altar, sealing the Sinai covenant.
3. Leviticus 16 sets the Day of Atonement pattern: blood is sprinkled before the mercy seat to atone for sin. The writer of Hebrews repeatedly alludes to this liturgical backdrop.

New Testament Usage

Hebrews 11:28 is the sole occurrence of 4378 in the Greek New Testament:

“By faith he kept the Passover and the sprinkling of the blood, so that the destroyer of the firstborn would not touch their firstborn.”

The verse presents Moses’ obedience as faith in action—he trusted God’s word that blood, properly applied, would avert judgment.

Passover Typology and Christ’s Sacrifice

Scripture consistently portrays the Passover lamb as a type of Christ (John 1:29; 1 Corinthians 5:7). The Hebrews 11 reference to sprinkling stands as a bridge from the Exodus night to Calvary. Believers now trust not in animal blood but in “the precious blood of Christ, a lamb without blemish or spot” (1 Peter 1:19). The once-for-all offering (Hebrews 9:12) fulfills the Passover pattern; the original act of applying blood foreshadows personal appropriation of Christ’s redemptive work.

Sprinkling and Covenant Imagery

Hebrews develops three layers of sprinkling imagery:
• Inauguration (Hebrews 9:18-22) – Moses sprinkles blood on the book and the people, ratifying the covenant.
• Purification (Hebrews 9:13-14) – animal blood sanctifies outwardly; Christ’s blood cleanses the conscience.
• Access (Hebrews 10:19-22) – hearts are “sprinkled clean from a guilty conscience,” enabling bold entrance into the Most Holy Place.

Theological Implications

1. Substitutionary Protection – The destroyer passed over households marked by blood. In Christ, judgment passes over those under His atoning sacrifice (Romans 5:9).
2. Covenantal Commitment – Sprinkling binds God and His people. Believers are “chosen … for obedience and sprinkling of the blood of Jesus Christ” (1 Peter 1:2).
3. Faith’s Instrumentality – Hebrews 11:28 highlights faith as the channel by which the objective provision of blood becomes subjectively effective.

Pastoral and Ministry Applications

• Assurance of Salvation: Teaching on 4378 reassures believers that God honors the application of Christ’s blood, silencing condemnation.
• Ordinances and Worship: While the Lord’s Supper is not a literal sprinkling, it continually points the church back to the once-for-all application of Christ’s blood.
• Intercession: Prayer leaders may invoke the cleansing and protecting power of Jesus’ blood, echoing Moses’ faith-based action.
• Discipleship: New believers should grasp that salvation involves both the historical event of the Cross and personal appropriation—“the sprinkling.”

Contemporary Relevance

In pluralistic cultures, 4378 reminds the church that deliverance from judgment rests on a distinct, divinely prescribed means: faith in the shed blood of God’s chosen Lamb. It calls modern Christians to bold witness, clear proclamation of atonement, and worship that centers on Christ’s sacrifice rather than self-effort.

Related Scriptures

Exodus 12; Exodus 24:3-8; Leviticus 16; Isaiah 52:15; Ezekiel 36:25-27; Matthew 26:28; John 1:29; Romans 3:25; Hebrews 9:11-28; Hebrews 10:19-22; Hebrews 12:24; 1 Peter 1:2, 18-19; 1 John 1:7

Forms and Transliterations
προσεχώρησαν προσχυσιν πρόσχυσιν πρόσχωμα προσχωρήσαι proschusin proschysin próschysin
Links
Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
Hebrews 11:28 N-AFS
GRK: καὶ τὴν πρόσχυσιν τοῦ αἵματος
NAS: the Passover and the sprinkling of the blood,
KJV: and the sprinkling of blood,
INT: and the sprinkling of the blood

Strong's Greek 4378
1 Occurrence


πρόσχυσιν — 1 Occ.

4377
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