Mary’s Perfect Unity with God’s Will
Understanding Spiritual Perfection
When St. Alphonsus Liguori, a 18th-century Italian theologian and saint, wrote that “Mary was the most perfect among the saints only because she was always perfectly united to the will of God,” he wasn’t talking about perfection the way we usually think about it. He wasn’t saying Mary never made mistakes or that she had a perfect report card. Instead, he was describing something much deeper and more beautiful: a complete alignment of her desires, choices, and life direction with what God wanted for her and for humanity.
This essay explores what this quote really means, why it matters across cultures and centuries, and what it teaches us about true excellence and fulfillment.
What Does “Perfectly United to the Will of God” Actually Mean?
Breaking Down the Concept
To understand St. Alphonsus’s claim, we need to unpack what it means to be “united to God’s will.”
It doesn’t mean:
- Being a robot or having no personality
- Never having doubts or struggles
- Not making any decisions for yourself
- Being passive or inactive
It actually means:
- Genuinely wanting what God wants, not just doing it because you have to
- Aligning your deepest values and goals with a higher purpose
- Trusting that God’s plan is better than your own, even when it’s difficult
- Making free choices that reflect your authentic commitment to something greater than yourself
Think of it like a musician in an orchestra. Perfect unity with the conductor’s will doesn’t mean the musician has no talent or creativity. It means the musician plays their instrument so well and listens so carefully to the conductor that their individual performance seamlessly creates beautiful harmony with everyone else.
Mary’s Specific Journey
Mary’s life illustrates this perfectly. When the angel Gabriel appeared to her and announced she would become the mother of Jesus, she wasn’t told all the details. She didn’t know about the stable in Bethlehem, the exile to Egypt, or watching her son die on a cross. Yet she responded with those famous words: “Let it be done to me according to your word” (Luke 1:38).
This wasn’t blind obedience. This was informed trust. Mary had studied scripture. She understood that God had promised a Messiah. She said yes knowing her life would change forever, not knowing exactly how, but confident in God’s goodness.
Why Mary’s Perfection Stands Out Among All Saints
The Distinction St. Alphonsus Makes
What makes Mary different from other saints, according to St. Alphonsus, is the consistency and completeness of her unity with God’s will. Other saints achieved incredible holiness. St. Francis gave up his wealth. St. Augustine overcame destructive habits. St. Theresa of Calcutta served the poorest of the poor. But each of these saints also had their spiritual journey—moments of doubt, struggle, and growth.
Mary, from the earliest point in her life, lived in complete harmony with God’s purpose. She didn’t gradually grow into this alignment; she embodied it completely from the start.
A Living Example of Radical “Yes”
St. Alphonsus saw Mary as the perfect example of what happens when someone says “yes” to God—not just once, but continuously, in every circumstance. When things went well, she trusted. When things were painful (like standing at the foot of the cross), she still trusted. When she didn’t understand (like when young Jesus stayed in the temple), she still accepted.
This isn’t weak submission. This is the strongest possible stance: the ability to surrender control while remaining fully engaged and faithful.
The Practical Meaning of “Perfect Union”: What It Looked Like in Mary’s Life
Her Silent, Active Role
One thing that strikes many people about Mary is how quiet she seems in the Gospels. She doesn’t give long speeches. She doesn’t perform miracles. But look at what she does:
At the Annunciation: She questions the angel respectfully, then accepts completely.
At Bethlehem: She cares for her newborn in humble circumstances, protecting and nurturing what was entrusted to her.
During Jesus’s Ministry: She respects his independence while remaining part of his community, appearing at significant moments.
At the Crucifixion: She witnesses the death of her son with courage and faith, standing with other faithful women and disciples.
In the Early Church: She prays with the apostles in Jerusalem, supporting the community Jesus left behind.
In each situation, Mary did what was needed, when it was needed, without seeking credit or recognition. She was perfectly responsive to God’s will as it unfolded.
The “Fiat” Principle
The Latin word fiat means “let it be done,” which is essentially what Mary said. But saying fiat wasn’t a one-time event in Mary’s life—it was her constant orientation. Every day, every challenge, every unexpected turn, she renewed that commitment. This is what St. Alphonsus means by “always perfectly united.”
Spiritual Perfection vs. Moral Perfection
An Important Distinction
It’s crucial to understand that St. Alphonsus wasn’t claiming Mary was perfect because she never faced temptation, never struggled with sin, or lived a pain-free life. Catholic theology traditionally holds that Mary was immaculate (free from original sin), but that’s different from saying her life was easy.
Instead, her perfection was spiritual—meaning her relationship with God was completely healthy, unbroken, and deeply trustful.
Think of it this way: A perfect student isn’t someone who never studies hard or never has to think about problems. A perfect student is someone who:
- Shows up consistently
- Does the work even when it’s difficult
- Asks for help when confused
- Keeps trying even after failures
- Wants to learn more deeply, not just get good grades
Mary embodied this kind of “perfection” toward God. Her goal wasn’t to perform well; it was to know and serve God completely.
The Global and Timeless Message
Why This Matters Across Cultures and Centuries
St. Alphonsus’s insight about Mary is remarkable because it transcends cultural and historical boundaries:
In Medieval Europe: This idea inspired people to trust God through plague, famine, and political chaos.
In Colonial Latin America: This vision of Mary’s willing surrender gave courage to indigenous peoples facing cultural oppression.
In Modern Asia: Marian devotion emphasizing her unity with God’s will has helped millions face poverty, disease, and social upheaval with faith.
In Contemporary North America: Even in our individualistic culture that celebrates self-determination above all, Mary’s example offers an alternative: What if real freedom comes from alignment with a purpose greater than yourself?
The Universally Human Question
At its core, St. Alphonsus’s quote addresses a question every human being faces: How do I find meaning, peace, and fulfillment?
Different cultures answer this differently, but Mary’s example transcends these differences. She found her deepest purpose not by imposing her will on the world, but by discovering what God wanted and making it her own. This resonates whether you live in rural Philippines, urban Canada, or anywhere in between.
What This Means for Anyone Today?
Reframing “Perfect”
St. Alphonsus’s quote invites you to ask: Perfect according to whose definition?
Mary’s perfection wasn’t about checking boxes on someone else’s list. It was about discovering what she was truly called to do and committing completely to that call. That’s a different—and ultimately more fulfilling—kind of excellence.
Finding Your Own “Will of God”
You might be wondering: “Okay, but how do I know what God’s will is for me?” Here’s what Mary’s example suggests:
- Pay attention to your deepest values. What genuinely matters to you? Justice? Creativity? Helping others? Serving your family?
- Listen to wise voices. Mary consulted with Elizabeth and trusted the angel. Who are the wise, faithful people in your life whose counsel you can seek?
- Be willing to be surprised. God’s plan for Mary included becoming the mother of the Messiah—something she probably never imagined. Your path might take unexpected turns that are better than what you planned.
- Say “yes” to growth, even when it’s hard. Mary didn’t understand everything, but she trusted enough to move forward. Growth requires some discomfort.
- Don’t mistake God’s will with perfectionism. God doesn’t demand perfect grades or a perfect body or perfect behavior. He invites you into authentic relationship and genuine service.
The Paradox of Surrender and Freedom
How Giving Up Control Creates Real Power
This might seem backwards, but St. Alphonsus points to something psychologists and philosophers have noticed: People who align their lives with something greater than themselves often feel more free, not less.
When Mary said “yes” to becoming the mother of Jesus, she gave up some control over her future. She couldn’t have predicted her life. But she gained something far more valuable: a sense that her life had ultimate significance and meaning.
Compare two approaches:
Approach 1 (Control): “I’ll plan every detail of my life to guarantee success and safety.”
- Problem: Life is unpredictable. Plans fail. You’re anxious.
Approach 2 (Alignment): “I’ll discover what I’m called to and commit to it fully, trusting that challenges will make me stronger.”
- Benefit: You’re less anxious about outcomes you can’t control. You’re focused on doing what matters. You feel connected to something bigger.
Mary embodied Approach 2. According to St. Alphonsus, that’s what made her the most perfect saint.
Common Misunderstandings Cleared Up
“Wasn’t Mary Just Passive?”
No. Mary was incredibly active. She:
- Raised a child in difficult circumstances
- Made decisions as part of Jesus’s family
- Contributed to the early church
- Advocated for others (like at the wedding at Cana, where she asked Jesus to help the hosts)
Her “unity with God’s will” didn’t make her inactive; it made her precisely and powerfully active in ways that served her purpose.
“Does This Mean I Should Give Up My Own Desires?”
Not exactly. St. Alphonsus believed that when you’re truly united with God’s will, your desires gradually align with it. You don’t suppress what you want; you discover that what you most deeply want is actually aligned with what God wants.
It’s like the difference between:
- Forcing yourself to eat vegetables because you “should” (resentment)
- Truly enjoying healthy food because you’ve learned it makes you feel good (authentic preference)
“Isn’t This Asking Too Much?”
Mary’s perfection was unique because of who she was and the role she had. St. Alphonsus doesn’t suggest that all saints—or all people—can or should aim for identical perfection. Rather, he’s pointing to a principle: To the degree that you align your will with God’s, you grow in holiness and peace.
For you, that might mean becoming the best student, family member, friend, or worker you can be by giving your full commitment to what matters most. It’s ambitious, but it’s the kind of ambition that creates genuine fulfillment.
The Wisdom for Our Modern World
Where Self-Will Gets Us Into Trouble
Our contemporary culture emphasizes individual will above all: “You do you.” “Follow your dreams.” “Don’t let anyone tell you what to do.” There’s wisdom in resisting oppression and claiming your agency. But taken to an extreme, unlimited individual will creates:
- Anxiety (too many choices, no clear direction)
- Loneliness (everyone pursuing their own agenda)
- Emptiness (success that doesn’t actually satisfy)
- Conflict (everyone’s will clashing with everyone else’s)
Mary’s Alternative Vision
Mary shows us an alternative: What if our greatest fulfillment comes not from maximizing our individual will, but from discovering our authentic purpose and committing completely to it?
This creates:
- Peace: You’re not constantly second-guessing yourself.
- Meaning: Your life serves something greater than pleasure or status.
- Community: When everyone is aligned with genuine good, we work together rather than against each other.
- Resilience: When hardship comes, you can face it because you know your suffering serves a meaningful purpose.
The Enduring Insight of St. Alphonsus Liguori
St. Alphonsus Liguori lived in the 18th century, in Italy, in a context very different from our own. Yet his insight about Mary remains strikingly relevant: True perfection isn’t about being flawless; it’s about being fully aligned with what matters most.
Mary was “the most perfect among the saints” not because she was superhuman or because her life was easy. She was most perfect because she said “yes”—and meant it—to God’s purpose for her life. She didn’t do this once; she did it continuously, through joy and sorrow, certainty and confusion, triumph and tragedy.
For us, whether we’re Christians or simply people trying to live meaningful lives, Mary’s example raises a profound question: What if I stopped trying to do everything my way and started discovering what I’m truly called to do? What if I said “yes” to that—completely—and trusted where it leads?
That kind of surrender isn’t weakness. It’s the deepest form of strength. It’s the perfection St. Alphonsus admired in Mary, and it’s available to anyone willing to seek it.
Key Takeaway: Mary’s perfection came from perfect unity with God’s will—not because she had no struggles, but because her deepest commitment was always to serve God’s purpose rather than her own agenda. This principle—alignment with a purpose greater than yourself—remains one of the most powerful keys to living a meaningful, peaceful, and genuinely excellent life.