Theology by Grace Alone through Faith Alone

Theology is fundamentally about knowing and confessing the Triune God through faith in his Word (Rom. 10:9). God the Holy Spirit works to create saving faith through the Word. Such faith is in no way the byproduct of human will or activity (Rom. 10:17, 1 Cor. 2:14-16). Scripture does allow that a natural knowledge of God accessible to all people exists (Ps. 19, Rom. 1-2). Yet, this philosophical recognition of God and his reality is not theology in its proper sense. At best, the natural knowledge of God is a partial, garbled knowledge that the sinful human heart will manipulate according to its own purposes. Since God saves by faith through grace alone, so too the theology that gives rise to that faith comes by grace alone.  

In this vein, the early Lutheran theologian Johann Gerhard (1582 – 1637) spoke of theology as a “practical habitus” that God implanted in the human heart and mind.  In the Aristotelian philosophy of the day, a “habitus” was an aptitude for developing a habitual behavior, such as a virtue. Gerhard argued that God’s grace made theology possible by means of the Holy Spirit working on the heart and mind of the theologian. This divine action enables readers to fully apprehend the truths present in the text of Scripture. Of course, the theologian might still draw on his own humanly acquired knowledge when studying Scripture. However, only God’s Spirit and the gifts that he bestows allows the theologian to properly apprehend the content and unity of the Faith. Such a divinely given “aptitude” is “practical” because its ultimate end is the proclamation of the grace of God in Christ through Word and Sacrament. 


From the draft manuscript for Lutheran Dogmatics: The Evangelical-Catholic Faith for an Age of Contested Truth (Lexham Press).


Cover image from: Tom Nash, “What Are Inspirations of the Holy Spirit?,” Catholic Answers, accessed June 23, 2025, https://www.catholic.com/qa/what-are-inspirations-of-the-holy-spirit; other image from Chantal LaFortune, “Sacred Scripture Unveiled,” Holy Apostles College & Seminary, December 8, 2023, accessed June 23, 2025, https://holyapostles.edu/sacred-scripture-unveiled/.

Reconciliation through the Spirit in the Means of Grace

The same Spirit that raised Jesus from the dead works through the Word and Sacrament ministry of the Church to share the universal and objective “not guilty” verdict of the Father. This verdict comes through the message of the death and resurrection of the Messiah.  Those who receive the proclamation of justification by faith secure the very presence of the risen Jesus in the power of the Spirit.  As the great cosmic judge, the Son of Man, Jesus now mediates the same verdict and presence he proleptically shared with the eschatological Israel in his earthly ministry through the Church. 

The Church is defined by the means of grace to which Jesus has attached his Name, that is, his presence.  Therefore, to be in contact with the means of grace is to both be in contact with the risen Jesus, and his body/bride the Church.  The Church and the Divine Service (Gottesdienst) is the replacement for the Temple (Eph. 2:19-22) and its service. This is because the Church and its Divine Service are now the body of Jesus, the true eschatological Temple in the flesh (Jn. 1:14).  As the Son of Man, Jesus proleptically elected and worked justification in the midst of the outcastes of Israel.  He told his hearers beforehand what verdict he would render on them in light of their belief or unbelief in his words of judgment and grace.1

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