LUKE 17:5–6
FAITH THAT MOVES THE IMPOSSIBLE
Text – Luke 17:5–6
5 And the apostles said to the Lord, “Increase our faith.”
6 The Lord replied, “If you have faith the size of a mustard seed, you would say to this mulberry tree, ‘Be uprooted and planted in the sea,’ and it would obey you.”
Historical and Jewish Context
A mustard seed was one of the smallest seeds known in ancient Palestine, yet it grew into a surprisingly large plant. Jesus used this well-known image to illustrate how even a tiny amount of authentic faith possesses tremendous potential. The mulberry tree (likely the black mulberry) was known for its deep, strong roots and its longevity—an image of something firmly established and difficult to move. Planting a tree in the sea would have been considered impossible, emphasizing the striking power of divine faith. The apostles’ request for increased faith follows Jesus’ teaching on forgiveness, a command that exceeded human strength and prompted their plea.
Catholic Theological Perspective
Faith is a supernatural gift infused by God, enabling believers to assent to divine truth and trust in God’s power. Jesus teaches that the effectiveness of faith lies not in its size but in its authenticity and its connection to God’s omnipotence. The mustard seed symbolizes even the smallest act of trust. Catholic theology emphasizes that faith grows through prayer, sacraments, Scripture, and acts of charity. The image of uprooting a mulberry tree expresses that faith makes possible what human effort cannot achieve—overcoming sin, bitterness, unforgiveness, and obstacles to holiness. True faith aligns the believer with God’s will, allowing divine power to work through human weakness.
Parallels in Scripture
Mt 17:20 – Faith the size of a mustard seed moving mountains.
Mk 9:24 – “I do believe; help my unbelief!” expressing faith seeking increase.
Heb 11:1 – Faith as the assurance of things hoped for.
Jn 15:5 – Apart from Christ, we can do nothing.
Eph 3:20 – God is able to accomplish far more than we ask or imagine.
Key Terms
Faith – Trust in God’s power, fidelity, and truth.
Mustard seed – Symbol of seemingly small yet effective faith.
Mulberry tree – Image of deeply rooted obstacles overcome by grace.
Increase our faith – Prayer for divine help in living the demands of discipleship.
Catholic Liturgical Significance
This passage appears in weekday liturgies and teaching on faith. It guides catechesis on the theological virtue of faith, especially for catechumens and those preparing for Confirmation. It is frequently referenced in retreats and spiritual direction as a reminder that God works powerfully through even the smallest acts of trust.
Conclusion
Jesus teaches that even a small, sincere faith unleashes God’s transforming power. What seems immovable or impossible yields to grace when the believer trusts in God rather than in self.
Reflection
Where do I feel overwhelmed or powerless? Is there a “mulberry tree” in my life that only God can uproot? Jesus invites me to offer even a small seed of faith and trust in His power.
Prayer
Lord Jesus, increase my faith. Strengthen my trust in Your love and power. Help me believe that, with You, all things are possible. Plant true faith in my heart so that Your grace may overcome every obstacle. Amen.