The Heart of Our Mission
Magnifying the Most Holy Trinity
St. Arnold Janssen cherished the profound conviction that God chooses to make His home within the human soul, most especially within the soul united to Christ and radiant with His grace. The mystery of the Divine Indwelling shaped the very heart of his spirituality. With reverence and love, he adored the Most Holy Trinity dwelling in the depths of the human heart, embracing this truth as the center of his devotion. His guiding principle was beautifully expressed in the words: “May the Triune God live in our hearts.”
From our Founder we have received a deep and enduring devotion to this central mystery of the Christian faith. Following his example, we strive to honor the Triune God in every dimension of our lives. In our prayer, our work, our joys, and our trials, we seek to remain continually aware of His loving presence. We contemplate and revere the God of love, dwelling in heaven, revealed in the Eucharist, and living within every human heart.
For this reason, the Solemnity of the Most Holy Trinity stands as the principal feast for all three religious Congregations founded by St. Arnold, expressing our shared desire to glorify the God who dwells within and among us.
Honoring the Holy Spirit
The Holy Spirit, the Third Person of the Blessed Trinity holds a singular place in our spirituality. It is the Spirit who pours divine charity into our hearts, giving us the grace to embrace our vocation with steadfastness, courage, and joy.
Our Founder chose the rose‑colored habit as a sign of the Holy Spirit’s burning love, whose fire both animates our mission and sustains us in faithful service. For this reason, Pentecost is celebrated as the chief feast of our Congregation, marking the outpouring of the Spirit who guides and empowers us.
In addition, we keep the third Monday of each month as a special day of renewed consecration to the Holy Spirit, an opportunity to deepen our awareness of His indwelling presence and to recommit ourselves to the responsibilities entrusted to us under His inspiration.
Honoring the Most Holy Eucharist
On the eve of All Saints in 1901, Father Arnold Janssen formally inaugurated the practice of perpetual adoration. From that moment forward, this sacred work has continued without pause, and we confidently trust in God’s goodness that there will always be devoted Cloistered Sisters ready to offer this noble and loving act of worship to our Divine Savior present in the Blessed Sacrament. (Mother Mary Michael)
The Eucharist is the heart of our personal and communal life, and our contemplative vocation draws its very breath from this sacred mystery. In the Eucharist, the infinite love of the Triune God is unveiled in its most profound and intimate form.
Perpetual adoration, established by our Founder as a defining obligation of our institute and upheld by the Church, embodies this love through an unceasing offering of worship, presence, and devotion.
In all things, we seek to remain rooted in God and in His love, desiring to live entirely for His glory.
Sharing in the Mission of the Church
Your vocation should be understood in this light: you rise during the night to pray; you take your turn before the throne of grace; you devote several hours each day to prayer, yet you also dedicate several hours to work. You imitate both Mary and Martha, united in contemplation and service, and much good can be accomplished through this balance. Your work, too, contributes to the highest purpose: the salvation of souls. (Fr. N. Blum, SVD)
Following the vision articulated by the Second Vatican Council, the Church teaches that consecrated life is itself a mission. Every religious community, whether active or contemplative, is called to live with a missionary heart. The primary mission of consecrated men and women is to make Christ present in the world through the authenticity of their lives and the witness of their love. Our own missionary character flows from our Founder, whose zeal for the salvation of all peoples shaped the identity of our community.
We understand our call to glorify the Triune God, through His mysteries and saving action, as inseparably connected to our responsibility toward the entire human family, whom we carry before God in prayer. With St. Arnold, we firmly believe that through our hidden life of intercession, sacrifice, and self-offering, we truly participate in the Church’s missionary work and help to alleviate the needs and sufferings of humanity.
Vocational Inquiries
Our Mailing Address:
Mount Grace Convent
ATTN: Vocation Directress
1438 E. Warne Ave.
St. Louis, MO 63107-1097
Phone Number:
314-381-2654
E-mail:
Pope Leo XIV on Missionary Service
“Missionary disciples, therefore, are not first and foremost activists, organizers or strategists. They are men and women who have allowed themselves to be touched by God’s compassion, and who bring that compassion to the world through their presence, their words, and their prayer.
Faith acts quietly, humbly, like a seed that grows unseen; yet it bears fruit in abundance. This is why the missionary vocation requires interior strength: a life rooted in prayer, Eucharistic adoration, listening to the Spirit, and persevering charity.
Many missionaries, priests, religious, and lay people, live this vocation in remote places, among peoples who are often forgotten by the world. Their service is not only pastoral, but contemplative: it proclaims the Gospel simply by remaining close to those who suffer, by accompanying them in their trials, and by witnessing that God has not abandoned them.”