Concerning Lust

October 23, 2025

Theological Summary

Key insights and takeaways from the text.

In Matthew 5:27-30, Jesus profoundy redefines and intensifies the Sixth Commandment, moving beyond the mere external act of adultery to the internal disposition of the heart. He declares that a lustful glance is, in God's eyes, an act of adultery committed in one's heart. This passage is fundamentally important for Christians today because it exposes the true nature of sin as originating not just in outward actions, but in our inner desires and intentions. It challenges us to examine the purity of our hearts and minds, reminding us that God's standard of holiness encompasses our deepest thoughts and longings, not just our visible behaviors. The radical imagery of gouging out an eye or cutting off a hand serves as a powerful metaphor for the extreme measures Christians must be willing to take to eradicate sin from their lives. Jesus is not advocating for self-mutilation, but for a ruthless, uncompromising commitment to eliminate anything—whether it be a habit, an influence, a relationship, or an internal desire—that causes one to stumble into sin and separate from God. The passage underscores the severity of sin's consequences, highlighting that it is better to suffer significant loss in this life than to face eternal separation from God. For contemporary Christians, this passage calls for a deep and ongoing spiritual discipline. It demands not just behavioral modification, but a genuine transformation of the heart, aligning our inner world with God's perfect will. It compels us to identify and confront the root causes of our temptations, to cultivate vigilance over our thoughts, and to proactively remove sources of ungodly influence. Ultimately, Matthew 5:27-30 is a call to radical purity and holiness, reminding us of the seriousness of sin, the depth of God's moral expectations, and the ultimate priority of securing our eternal destiny through a life devoted to Christ.

Scripture

Matthew 5:27-30

Old Testament Connections

Exodus 20:14 (NIV)

"You shall not commit adultery."

Exodus 20:14 establishes the foundational commandment against the act of adultery. Matthew 5:27-30 profoundly deepens and fulfills this Old Testament law by revealing its spiritual intent, asserting that the sin lies not just in the physical act but in the lustful desire of the heart, demanding radical internal purity.

Job 31:1 (NIV)

"“I made a covenant with my eyesnot to look lustfully at a young woman."

Job 31:1 illustrates an Old Testament commitment to internal purity by controlling one's gaze, directly foreshadowing Jesus's teaching in Matthew 5:27-30. Jesus fulfills and deepens this spiritual understanding by declaring that lustful looking itself constitutes adultery of the heart, demanding a radical inner transformation.

A Moment of Prayer

A prayer inspired by today's topic.

Heavenly Father, I confess the struggle within my heart against lustful desires. I pray for your divine strength to overcome temptation and to fix my eyes on you, the author of purity. Cleanse my mind and spirit, Lord, that I may honor you with every thought and action. Help me to flee from anything that defiles your temple within me. Amen.

Historical Context

The world behind the Word.

The Gospel of Matthew, traditionally attributed to Matthew, a Jewish tax collector and one of Jesus' twelve apostles, was likely composed between 80 and 90 CE. It was primarily intended for a Jewish-Christian audience, aiming to demonstrate that Jesus was the long-awaited Messiah who fulfilled the Old Testament prophecies, while also providing ethical and theological instruction for the nascent Christian community. The setting for much of Jesus' teaching, including the Sermon on the Mount where Matthew 5:27-30 is found, was Galilee, a predominantly Jewish region in northern ancient Israel, though his ministry extended to Judea and Jerusalem, the heart of Jewish religious and political life. During this period, Judea was under direct Roman provincial rule, administered by Roman governors like Pontius Pilate, while Galilee was governed by a client king, Herod Antipas. This political climate was characterized by simmering tensions between the Roman occupiers and the Jewish populace, who chafed under foreign rule and heavy taxation. Socially, Jewish society was stratified, with a small wealthy elite (often aligned with Roman interests) at the top, and a large population of peasants, artisans, and the poor at the bottom. The political and economic pressures often led to social unrest and a heightened sense of messianic expectation, as people yearned for a deliverer to restore Jewish sovereignty. The cultural and religious landscape was dominated by the Mosaic Law (Torah), which formed the bedrock of Jewish identity and practice. Various Jewish sects, such as the Pharisees and Sadducees, offered differing interpretations of the Law and its application. The Pharisees, for instance, emphasized both the written Torah and an extensive oral tradition, promoting strict adherence to ritual purity and legal precepts. It is against this backdrop of legalistic interpretation that Jesus' teachings in the Sermon on the Mount, including Matthew 5:27-30, should be understood. When Jesus says, "You have heard that it was said, ‘You shall not commit adultery,’" he references a fundamental command from the Ten Commandments (Exodus 20:14). His subsequent declaration, "But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart," represents a radical reinterpretation. Instead of focusing solely on the external act of adultery, Jesus delves into the internal motivation, challenging the prevailing legalistic emphasis and demanding a deeper, more internal righteousness from his followers. This shift from external observance to internal purity was a hallmark of Jesus' ethical teaching. The hyperbolic imagery of gouging out an eye or cutting off a hand is a rhetorical device common in ancient Near Eastern and prophetic literature. It is not meant to be taken literally, but serves to dramatically underscore the absolute seriousness of sin and the radical commitment required for discipleship. Jesus emphasizes that it is better to take drastic measures to avoid sin than to face the ultimate consequence of "hell" (Gehenna). Gehenna, or the Valley of Hinnom, was a literal valley outside Jerusalem associated with ancient pagan child sacrifice and later became a refuse dump where fires constantly burned. In Jewish eschatological thought, it evolved into a symbol of divine judgment, destruction, and eternal punishment. Thus, Jesus' words highlight the profound moral responsibility of individuals and the severe eternal consequences of unrepentant sin, urging his followers to cultivate purity of heart and intention, not just outward conformity to the law.

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