Cross theology – What is it? What is the theology of the cross?

WHAT DOES THE BIBLE SAY?

The theology of the cross emerged in Martin Luther’s early Reformation writings as he resisted the medieval “theology of glory,” which taught that people could understand God through their own reasoning or moral effort. Luther argued that such confidence in human ability misunderstood both the depth of sin and the way God has made Himself known. In the Heidelberg Disputation, he argued that human wisdom cannot bring a person to knowledge of God or salvation; God must reveal Himself, and He has done so decisively in the cross of Christ.

Luther also used the theology of the cross to reshape how believers understood the Christian life. Since God revealed His saving wisdom through Christ’s suffering, believers should not expect His work to appear outwardly impressive or free from hardship. The cross thus became the lens through which Christians recognize grace in weakness, endure trials, and reject the idea that outward success proves God’s favor (2 Corinthians 4:7–12).

Cross theology emphasizes Scripture’s teaching that God uses what seems insignificant to accomplish His purposes (1 Corinthians 1:27), that Christ’s humiliation led to His exaltation (Philippians 2:5–11), and that true knowledge of God comes only through the Son whom the Father reveals (Matthew 11:27).

FROM THE OLD TESTAMENT

• The theology of the cross teaches that God reveals Himself through the suffering and weakness of Christ crucified. Isaiah 53, known as the “suffering servant” passage, prophesies about Christ, showing the pain he would endure and that He “had no form or majesty that we should look at him, and no beauty that we should desire him” (Isaiah 53:2).

FROM THE NEW TESTAMENT

• Luther’s view was in opposition to the medieval “theology of glory,” which looked for God in human reason, merit, or visible spiritual strength. He argued that such confidence blinds people to both the depth of sin and the surprising way God makes Himself known: through what appears foolish and weak to the world (1 Corinthians 1:18–27).
• Paul explained that Christ crucified is “the power of God and the wisdom of God,” revealing God’s saving purpose where human wisdom sees only defeat (1 Corinthians 1:18–31). The cross is the place where God shows who He is and how He saves, overturning every human expectation about divine power.
• The theology of glory that Luther was countering expected God’s work to appear in outward strength or visible impressiveness. It assumes that what seems powerful or successful reflects God’s favor. Scripture, however, teaches that suffering is normal for believers and a means God uses to shape character (James 1:2–3). Luther emphasized that Christians share in Christ’s sufferings (Philippians 3:10), experience God’s strength in weakness (2 Corinthians 4:7–12), and witness God choosing what appears insignificant to accomplish His purposes (1 Corinthians 1:27).

IMPLICATIONS FOR TODAY

The theology of the cross teaches you where to look if you want to know God and understand your life before Him. God has chosen to make Himself known most clearly through the suffering and death of Jesus Christ. At the cross, God showed the seriousness of sin and the depth of His mercy. When you look at Jesus on the cross, you see what God is like and how far He was willing to go to rescue sinners.

Believers today realize that is how salvation truly works. God does not ask us to climb our way toward Him or earn His favor. Instead, He has come to us through His Son. What does this mean for us today? We should never get caught up in doing good works out of fear or obligation, as if we’re earning “credit” toward our salvation. As the old hymn says, Jesus paid it all. But we should want to show the world that truth. This is one key reason for good works: to let our light shine so much that we give glory to God (Matthew 5:16).

UNDERSTAND

• God reveals His saving power through Christ’s suffering, not human effort.
• The cross, though seeming weak, fulfills God’s purposes and shows His wisdom.
• True faith embraces weakness and relies on Jesus, not human strength.

REFLECT

• How do you respond when God works in ways that seem weak, hidden, or unexpected?
• In what areas are you relying on your own effort instead of trusting God’s power revealed through the cross?
• How does seeing Jesus’ suffering on the cross shape the way you view your own trials or hardships?

ENGAGE

• How does the theology of the cross challenge the world’s idea that success or strength proves God’s favor?
• How can we embrace weakness or humility while still glorifying God?
• How might understanding God’s wisdom revealed in the cross change the way we approach ministry, justice, or service?