On the Trinity is a Latin book written by Augustine of Hippo to discuss the Trinity in context of the logos. Although not as well known as some of his other works, it is arguably his masterpiece and of more doctrinal importance than the Confessions or City of God.

"In this work, traditionally translated as On Christian Doctrine, Augustine combines the pedagogical methods he learned from Greek and Roman writings with the content of the Christian faith to help preachers present biblical teachings in an effective manner. This new translation is lively and accessible." Library Journal

For many people the doctrine of the Trinity is a hopeless puzzle, an outdated philosophical idea far removed from everyday life. What does it all mean? And how can something so mysterious possibly make a difference in our everyday lives? In Experiencing the Trinity Darrell Johnson shows that this doctrine is not only at the heart of biblical Christianity, but that it is also at the center of Christian experience-of following Jesus Christ in ordinary life and seeing God at work in our human relationships. "At the center of the universe is a relationship," writes Johnson. "That is the most fundamental truth I know. It is out of that relationship that you and I were created and redeemed. And it is for that relationship that you and I were created and redeemed."

The Trinity is the central mystery of the Christian faith. What can we say about the divine nature, and what does it mean to say that God is Father, Son, Holy Spirit, three persons who are one in being? In this book, best selling author Thomas Joseph White, OP, examines the development of early Christian reflection on the Trinity, arguing that essential contributions of Patristic theology are preserved and expanded in the thought of Thomas Aquinas. By focusing on Aquinas’ theology of the divine nature as well as his treatment of divine personhood, White explores in depth the mystery of Trinitarian monotheism. The Trinity: On the Nature and Mystery of the One God also engages with influential proposals of modern theologians on major topics such as Trinitarian creation, Incarnation and crucifixion, and presents creative engagements with these topics. Ultimately any theology of the cross is also a theology of the Trinity, and this book seeks to illustrate how the human life, death, and resurrection of Jesus reveal the inner life of God as Trinity.

The following dissertation concerning the Trinity, as the reader ought to be informed, has been written in order to guard against the sophistries of those who disdain to begin with faith, and are deceived by a crude and perverse love of reason. Now one class of such men endeavor to transfer to things incorporeal and spiritual the ideas they have formed, whether through experience of the bodily senses, or by natural human wit and diligent quickness, or by the aid of art, from things corporeal; so as to seek to measure and conceive of the former by the latter. Aeterna Press

In this brief and winsome book, Michael Reeves presents an introduction to the Christian faith that is rooted in the triune God. He takes cues from preachers and teachers down through the ages, setting key doctrines of creation, the person and work of Christ, and life in the Spirit into a simple framework of the Christian life.

The Bible teaches that God is one in substance and three in person--the Father, the Son, and the Holy Spirit. Although the Trinity is clearly taught in the Bible, it has been attacked throughout church history, and many Christians today have not studied this foundational doctrine. In this booklet, Dr. R.C. Sproul carefully explains the Trinity and clarifies common misconceptions. While the Trinity is mysterious, it is not contradictory, and it is essential to understanding the nature of God. The Crucial Questions booklet series by Dr. R.C. Sproul offers succinct answers to important questions often asked by Christians and thoughtful inquirers.