A Mighty Fortress Is Our God
A mighty fortress is our God, a sword and shield victorious
A Mighty Fortress Is Our God is a hymn text by Martin Luther; tr. various (1529) in 8.7.8.7.6.6.6.6.7 meter. Found in CW21 863, CW93 200, ELH 250, elw 505. Sung to EIN FESTE BURG.
The great Reformation hymn, a paraphrase of Psalm 46. The four stanzas present God as our defender against the devil, identify Christ as the one who wins the battle, acknowledge that earthly things may be lost but God's kingdom is secure, and declare that the Word of God stands forever. The quintessential Lutheran hymn.
History & Background
Written by Martin Luther in 1529, based on Psalm 46. The German original Ein feste Burg ist unser Gott became the anthem of the Reformation. Bach wrote Cantata BWV 80 based on this chorale. The hymn appears in multiple English translations; the ELW uses the translation by various hands.
Hymnal Appearances
- Christian Worship: Hymnal — 863
- Christian Worship — 200
- Evangelical Lutheran Hymnary — 250
- Evangelical Lutheran Worship — 505
- Gather 4th Edition — 752
- Lutheran Book of Worship — 229
- Lutheran Service Book — 656
- Lutheran Worship — 298
- The Lutheran Hymnal — 262
Bach Cantatas
- BWV 80: A mighty fortress is our God (1724)
Bulletin Note
A Mighty Fortress Is Our God — Martin Luther, 1529
Preaching Connection
Psalm 46 — God as our refuge and strength; the Word of God that stands forever.
Stanza Arc
The narrative or theological arc traced by this tune's stanzas: Law → Gospel → Assurance → Victory. Establishes human vulnerability and demonic opposition, then proclaims Christ as sole defense, strengthens faith against worldly threats, and concludes with eternal triumph of God's truth over all earthly powers.
In the Church Year
Hymn of the Day (Lutheran Service Book) for: Reformation; Lent 1
Suggested in the one-year series
- Lent 1 (7×)
- Reformation (7×)
- Easter 6 (2×)
- Trinity 4 (2×)
- St. Mary Magdalene (1×)
- Trinity 8 (1×)
Suggested in the three-year series
- Reformation (9×)
- Lent 1 (8×)
- Epiphany 3 (1×)
- Proper 17 (1×)
- Proper 5 (1×)
- Proper 8 (1×)
From LCMS Worship's published hymn suggestions, 2014–2026. The count is how many of those yearly lists suggested this hymn for that day.
Overview
Luther's most famous hymn, a paraphrase and Christian interpretation of Psalm 46. It is not a triumphalist battle song but a hymn of trust under spiritual attack. St. 1 names God as fortress and the devil as the enemy; st. 2 confesses human helplessness and the 'Valiant One,' Jesus Christ; st. 3 defies the devil, who is already judged; st. 4 clings to the Word even if everything else is lost. It is the battle hymn of the Reformation because its weapon is the Word.
Central theme: God's protection of his people against the devil through Christ and his Word
Structure
Enemy described (1); our weakness and Christ's strength (2); defiance (3); the Word remains (4).
Law & Gospel Shape
Law in the description of our weakness (st. 2) and the enemy's power; Gospel in Christ the champion and the unbreakable Word.
Confessional Connections
Christ's victory over the devil (AC III); the Word as the means of grace (AC V); the cross and suffering of the church; 'one little word' as the efficacy of the Word.
Liturgical Use (Study Notes)
Reformation Day (Oct 31); First Sunday in Lent (temptation of Christ); times of trial; national crisis.
Historical Notes
Probably written between 1527 and 1529, a period of plague, Turkish advances, and conflict. First surviving print: Klug's Gesangbuch, Wittenberg 1529.
About the Tune
EIN FESTE BURG — Luther's own melody, originally rhythmic (row 17); the isometric version (row 18) dominated 19th-century use.
Scripture References
Ps 46 Ps 18:2 Eph 6:10-17 John 12:31 John 16:11 1 Pet 5:8 Matt 10:28 Isa 40:8
Stanza by Stanza
God is a mighty fortress, shield, and weapon who frees us from every need; but the old evil foe is coming with deadly intent, cunning, and power unmatched on earth.
Ps 46:1 ('God is our refuge and strength') is rendered with castle imagery common in the Psalms (Ps 18:2; 91:2). 'Shield and Weapon' combines defense and offense. Then the stanza turns sharply to the enemy: 'the old evil Foe' is the devil, the ancient serpent (Rev 12:9). Luther takes the devil seriously — 'deep guile and great might… On earth is not his equal.' No human power can match him (Eph 6:12). The stanza ends in apparent danger, setting up the need for a champion.
- Scripture
- Ps 46:1-3, Ps 18:2, Ps 91:2, Rev 12:9, Eph 6:11-12, 1 Pet 5:8
- Imagery & language
- Fortress, shield, weapon; armed enemy.
- Law / Gospel
- Gospel (God as refuge) facing the reality of spiritual warfare.
- Connection to previous
- Opening confession.
Our own strength accomplishes nothing and would soon fail; but the Valiant One, chosen by God, fights for us — Jesus Christ, Lord of hosts, the only God, who holds the field forever.
The theological center. 'With might of ours can naught be done' is the bondage of the will and the uselessness of works in the spiritual battle. The champion is introduced by a catechetical question and answer: 'Ask ye, Who is this? Jesus Christ it is.' Luther identifies Christ as 'Lord Sabaoth' (Lord of hosts, the Old Testament name of Yahweh) and 'none other God' — a bold confession of Christ's deity. 'Whom God Himself elected' refers to Christ as God's chosen one (Isa 42:1; 1 Pet 2:4). 'He holds the field' — the battle is already won.
- Scripture
- Ps 46:7, 11, Isa 42:1, Rom 8:37, 1 Sam 17:47, Col 2:15, Rev 17:14
- Imagery & language
- Champion; battlefield; Lord of armies.
- Law / Gospel
- Law (our helplessness) then Gospel (Christ fights for us).
- Connection to previous
- Answers the danger of st. 1.
Even if devils filled the world eager to devour us, we need not fear; the prince of this world may rage, but he is judged and one little word can bring him down.
Bold defiance, grounded in Christ's accomplished victory. 'This world's prince' is Christ's own title for Satan (John 12:31; 16:11), and 'He's judged' quotes John 16:11. 'The deed is done' points to the cross. 'One little word can fell him' is Luther's confidence in the efficacy of God's Word — perhaps the word of Christ's name, or 'It is written' as in Christ's temptation (Matt 4:1-11). Luther elsewhere says a single word of absolution or Scripture can drive off the devil.
- Scripture
- John 12:31, John 16:11, 1 Pet 5:8, Matt 4:1-11, Rev 12:10-12, Jas 4:7
- Imagery & language
- World filled with devils; a single word as weapon.
- Law / Gospel
- Gospel — victory already won.
- Connection to previous
- Defiance grounded in Christ's victory from st. 2.
The enemies must leave God's Word standing, without gaining thanks for it; Christ is beside us with his gifts and Spirit; even if they take life, goods, honor, family, they win nothing — the Kingdom remains ours.
The Word will remain whether its enemies like it or not (Isa 40:8; Matt 24:35). 'He's by our side upon the plain / With His good gifts and Spirit' — Christ is present through the means of grace. The stunning list 'life, goods, fame, child and wife' echoes Christ's words about losing everything (Matt 10:28, 37-39; 16:25). Luther is not glib — he lost a daughter in 1528. The final line, 'The Kingdom ours remaineth,' states the Christian's real possession, which no enemy can take (Luke 12:32; Heb 12:28). This is the theology of the cross: glory is hidden under loss.
- Scripture
- Isa 40:8, Matt 24:35, Matt 10:28, Luke 12:32, Heb 12:28, Rom 8:35-39
- Imagery & language
- Battlefield 'plain'; plunder of possessions; an unconquerable kingdom.
- Law / Gospel
- Gospel — security of the Kingdom.
- Connection to previous
- Final word of confidence after the battle of st. 1-3.
Themes
Reformation Spiritual Warfare God's Protection Luther