"Many years ago, I heard Donald Hustad define worship as 'obsession with God.' That describes Sam Andersen's passion to know God. That passion is evident in this, Sam's quest to understand the Trinity mystery."
--Nathan Joy James, Interim Pastor, Evangelical Free Church of Oelwein, Iowa

"In The Trinity Mystery, Sam Andersen provides us with a down-to-earth explanation of the loftiest of subjects: the unique nature and activities of the one true God, who has revealed himself as Father, Son, and Holy Spirit. Sam upholds the Reformed view of God while correcting some of the most common misconceptions about him and unfolding some of the most important practical implications of knowing him as Father, Son, and Holy Spirit."
--Bill Burns, Associate Dean, Antioch School of Church Planting and Leadership Development

"Take a dive into knowing the one true God. Understanding his relationship as a Trinity is crucial in recognizing how God has revealed himself to humanity. The Trinity Mystery will help you connect personally with the doctrine and whet your appetite to pursue him more."
--Shea Houdmann, President and Founder, GotQuestions.org

"Sam has brought to life a topic that many churches fail to speak about in depth. In an engaging and informative style, through this book you can really begin to understand the Trinity mystery!"
--Amber, author at studentdevos.com