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I. Eighteenth Sunday after Pentecost (Series A)

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1. Repentance and Faith in Christ

The readings center on God's call to repentance, the rejection of self-justification, and the life of faith that trusts God's mercy. Ezekiel declares that God takes no pleasure in the death of the wicked but desires that the sinner turn and live. Psalm 25 responds with humble dependence upon God's mercy and instruction. Philippians describes the humility that flows from being united to Christ, whose own humiliation and exaltation are the supreme pattern of Christian life. Matthew contrasts empty religious claims with genuine repentance and faith.

The central Lutheran emphasis is Law and Gospel: God's Law exposes sin and calls sinners to repentance, while the Gospel directs the repentant sinner to God's mercy in Christ. The LCMS emphasizes that repentance consists properly of contrition and faith, with works following as fruits of repentance rather than earning forgiveness.

2. Old Testament Reading - Ezekiel 18:1-4, 25-32

A. Context

Ezekiel speaks to Israelites who were tempted to blame their circumstances and their ancestors for their present condition. The proverb about the fathers eating sour grapes expresses an attempt to shift responsibility away from the present generation.

God rejects this excuse. Each person stands accountable before Him: "The soul who sins shall die." 1

Yet God's purpose is not merely condemnation. The Lord calls the wicked to turn from sin and live. He declares that He takes no pleasure in the death of anyone and concludes with the gracious command: "Repent and turn from all your transgressions." 2

B. Law

Sin cannot be excused by ancestry, circumstances, other people, or past history. Every sinner stands personally accountable before God. 3

The passage also condemns the human tendency to accuse God of being unjust when His judgment confronts our sin. The sinner would rather question God's justice than acknowledge his own guilt.

C. Gospel

God's desire is life rather than death. His call to repentance is therefore gracious. The command to "make yourselves a new heart and a new spirit" should not be understood as teaching that fallen man can regenerate himself by his own power. In the broader biblical witness, repentance itself is God's gracious work, and the sinner's life comes through God's mercy.

The Lutheran Confessions teach that conversion begins when God's Law reveals the sinner's lost condition and the Gospel brings the sinner to faith in Christ and the forgiveness He has earned. 4

D. Christological Fulfillment

The promise of life for the repentant finds its fulfillment in Christ. Jesus bears the judgment that sinners deserve and gives forgiveness and life to those who trust in Him.

Ezekiel's call therefore points beyond moral improvement to the gracious work of God who brings sinners from death to life.

3. Psalm - Psalm 25:1-10

A. Prayer of Trust

The psalmist begins by lifting his soul to the Lord. He does not appeal to his own righteousness but asks God to teach, guide, remember, and forgive.

The prayer "Lead me in your truth and teach me" expresses the proper posture of faith: the sinner does not presume to know God's way independently but receives God's Word.

B. Mercy

The psalm repeatedly emphasizes God's steadfast love and mercy. "Remember not the sins of my youth" recognizes personal sin while trusting that God's mercy is greater than the sinner's guilt. 5

This corresponds closely with Ezekiel: repentance acknowledges sin honestly while faith looks to God's gracious character.

C. Christological Fulfillment

The Lord's "steadfast love and faithfulness" ultimately find their fullest expression in Jesus Christ. In Christ, God's mercy is not an abstract sentiment, but a concrete gift secured through Christ's obedient life, atoning death, and resurrection.

4. Epistle - Philippians 2:1-4 (5-13) 14-18

A. Unity in Christ

Paul calls Christians to live in humility, unity, and concern for others. 6 This is not a program for earning God's favor. Rather, it describes the life that flows from belonging to Christ.

Christian humility begins with the Gospel: believers have received consolation in Christ, fellowship in the Spirit, affection, and mercy.

B. Christ's Humiliation

The heart of the reading is Christ's humiliation:

Christ Jesus humbled Himself and became obedient to the point of death - even death on a cross. 7

Jesus did not grasp after status or privilege. He willingly descended into humiliation and death for the salvation of sinners.

His exaltation is therefore inseparable from His cross. God highly exalted Him and gave Him the name above every name. 8

C. Sanctification

"Work out your own salvation with fear and trembling" must not be separated from the following statement: "For it is God who works in you." 9

Paul is not teaching salvation by human works. God Himself is the One who works in Christians, producing both willing and doing according to His good pleasure.

Good works therefore belong to the Christian life as the fruit of God's gracious work rather than the basis of justification.

D. Christian Life

The Christian is called to live without grumbling or disputing and to hold fast to the Word of life. 10

The humility of Christ becomes the pattern for Christian relationships: because Christ has humbled Himself for us, Christians are freed from living for self and are able to serve their neighbors.

5. Gospel - Matthew 21:23-27, 28-32

A. Authority Challenged

The chief priests and elders ask Jesus, "By what authority are you doing these things?" 11

Their question is not an innocent request for information. They challenge Jesus' authority while refusing to recognize the divine authority already evident in His ministry.

Jesus exposes their unbelief through His question concerning John's baptism.

B. The Two Sons

Jesus then tells the parable of the two sons. One initially refuses his father's command but later repents and goes. The other says he will go but does not.

Jesus applies the parable directly: tax collectors and prostitutes entered the kingdom ahead of the religious leaders because they believed John's preaching and repented. 12

C. Words Versus Faith

The second son illustrates the danger of outward religious profession without genuine faith and repentance.

The issue is not merely saying the right words. The Gospel calls for faith that receives God's Word. Genuine faith bears fruit in a changed life.

This does not mean that works earn entrance into God's kingdom. Rather, repentance and faith are evidenced by their fruits. The LCMS describes works as fruits that follow repentance, while forgiveness itself is received through faith in Christ.

D. Christ and Repentance

Jesus Himself is the center of the call to repentance. John the Baptist prepared the way for Christ by preaching repentance, and Christ now confronts sinners with God's Law so that they might receive God's mercy.

The proper movement is:

Law -> contrition -> Christ -> faith -> forgiveness -> fruits of repentance

The LCMS has emphasized that repentance is not simply turning away from sinful behavior; it ultimately directs the contrite sinner to Christ and His forgiveness.

6. Key Doctrinal Themes

A. Repentance

God's Law exposes sin and calls sinners to turn from it. True repentance includes contrition and faith in God's promise of forgiveness in Christ. 13

B. Justification

Sinners are forgiven and declared righteous before God for Christ's sake through faith, not because of their works. 14

C. Christ's Humiliation

Jesus willingly humbled Himself to death on the cross for the salvation of sinners. His humiliation precedes His exaltation. 15

D. Sanctification

God works in believers to produce willing and doing according to His good pleasure. Christian obedience is therefore the fruit of God's gracious work. 16

E. Christian Humility

Those united to Christ are called to regard others as more significant than themselves and to follow Christ's pattern of self-giving service. 17

F. Law and Gospel

The Law exposes sin and brings contrition; the Gospel announces forgiveness and life in Christ. These must not be confused or blended into a system of salvation by human performance. 18

7. Law and Gospel Summary

Law: I have sinned. I cannot excuse myself by blaming my circumstances, my family, other people, or my past. I stand accountable before God. 19

Gospel: God does not delight in my death. He calls me to repentance and gives forgiveness and life through Jesus Christ. 20

Sanctification: Having received Christ's forgiveness, I am called to live in humility, love, obedience, and service to my neighbor. 21

8. Worship and Application

A Lutheran treatment of these readings naturally leads the congregation through confession, repentance, faith, forgiveness, and Christian vocation.

The readings especially invite Christians to examine whether they are merely saying the right things or actually trusting Christ's Word. They also warn against blaming others for one's sin or presuming that religious outward appearances substitute for repentance and faith.

The answer is not despair or self-reformation. The answer is Christ. God's Law brings the sinner to repentance, while the Gospel gives the sinner Christ's forgiveness. The forgiven Christian then lives in humility and service because God is at work within him. 22

9. Key Questions for Bible Study

  1. Why does God reject the proverb about the fathers eating sour grapes?
  2. What does Ezekiel teach about personal responsibility for sin?
  3. Why is God's command to "turn and live" ultimately a gracious invitation?
  4. How does Psalm 25 model repentance and faith?
  5. Why does Paul place Christ's humiliation at the center of Christian humility?
  6. What does "work out your own salvation" mean in light of "God who works in you"?
  7. What is the difference between the two sons in Jesus' parable?
  8. Why did the tax collectors and prostitutes enter the kingdom ahead of the religious leaders?
  9. How can outward religious words become a substitute for genuine repentance and faith?
  10. How do all four readings point the sinner toward Christ?

10. Research Topics

Repentance - The biblical and Lutheran understanding of contrition, faith, and the fruits of repentance.

Personal Responsibility - Ezekiel's rejection of excuses and the biblical doctrine of individual accountability before God.

Christ's Humiliation - Philippians 2 and the humiliation and exaltation of Christ.

Christian Humility - How union with Christ produces self-giving love toward the neighbor.

Law and Gospel - How God's Law exposes sin while the Gospel gives forgiveness and life in Christ.

Conversion - God's work of bringing sinners from unbelief to repentance and faith.

11. Recommended Hymns (LSB)

The LCMS Lutheran Hymn Index specifically includes the Lutheran Service Book and allows hymns to be examined by Scripture text and hymnal.