The Bible is the written word of the living God. He speaks through this word, working in and through human agents as he reveals himself to his people. His word is trustworthy, yet many Christians struggle to articulate why they believe that to be true. Centered in the words of Scripture and especially the teaching of Jesus himself, this volume unpacks the doctrine of Scripture as taught by the church through the ages, helping to strengthen listeners’ confidence in God’s word.

In this short introduction, Stanley Grenz and Roger Olson, two theologians who care deeply about the witness of ordinary Christians and the ministry of the church, show what theology is, what tools theology uses, why every believer (advanced degrees or not) is a theologian, and how the theological enterprise can be productive and satisfying. Their clear, easily understood book is ideal for students, church study groups, and individual Christians who want to strengthen understanding, belief, and commitment by coming to know God more fully.

Isaiah 40-66: Audio Lectures features Old Testament scholar John Oswalt teaching through the book of Isaiah in short, engaging, and challenging lessons. Based on Oswalt's Isaiah commentary in the NIV Application Commentary series, these lessons bring the meaning of Isaiah into the 21st century. As Oswalt works through the book passage-by-passage, he comments on the text itself and then explores issues in Israel's culture and in ours that help us understand the meaning of each passage.

 In his latest book, Angels, Dr. Heiser reveals what the Bible really says about God's supernatural servants. Heiser focuses on loyal, holy heavenly beings because the Bible has a lot more to say about them than most people suspect. Most people presume all there is to know about angels is what has been passed on in Christian tradition, but in reality, that tradition is quite incomplete and often inaccurate. Angels is not guided by traditions, stories, speculations, or myths about angels. 

Throughout the Bible, God has related to his people through covenants. It is through these covenant relationships, which collectively serve as the foundation for God’s promise to bring redemption to his people, that we can understand the advancement of his kingdom. This book walks through six covenants from Genesis to Revelation, helping us grasp the overarching narrative of Scripture and see the salvation God has planned for us since the beginning of time―bolstering our faith in God and giving us hope for the future.

Evangelism is more than a program. Every few years, churches jump into the latest evangelistic fad. Leaders administrate the new program, and members go on a raid. But picture a church where evangelism is simply part of the culture. Leaders share their faith consistently and openly. Members follow, encouraging one another to make evangelism an ongoing way of life. Such is the way of evangelism presented by this brief and compelling book. No program here.

In every position of power lies the potential for life-giving leadership or destructive corruption. Driven by sinful pride or opportunism, many people abuse their God-given influence, harming the ones they’re called to lead and contributing to an intense angst against authority. The answer to bad authority, however, is not no authority, but good authority—the kind that, according to Scripture, causes those under it to flourish. In this compelling guide from 9Marks, Jonathan Leeman shows that authority, done biblically, is not only good, but is essential to human flourishing.

In this volume, Dr. R.C. Sproul delves into the rich teaching, praises, and exhortations contained in one of his favorite books of the Bible. Take up this verse-by-verse guide to gain greater insights into the grace of the gospel and the glory of the Lord in the redemption of His people.

Theology can be intimidating. But it doesn’t have to be. Whether conversations about theology have felt out of reach, over your head, or irrelevant, consider this book an invitation to the dialogue. The goal of theology is knowing and loving God well. This is a lifelong endeavor, a never-ending pursuit, not for the sake of knowledge, but for an ever-deepening relationship with God Himself. 

What is the meaning of the Lord’s Supper? Jesus instituted the Supper to strengthen the faith of his followers by reminding them of his promises. More than an ancient church tradition or a complex doctrinal controversy, it has practical importance in the lives of Christians today. God has always made promises to his people through covenants, and along with them given signs and meals to point to and confirm his blessings. In this book, professor Guy Prentiss Waters defines and explores the unity of the covenants in the Old and New Testaments.

Trendy new missions strategies are a dime a dozen, promising missionaries monumental results in record time. These strategies report explosive movements of people turning to Christ, but their claims are often dubious and they do little to ensure the health of believers or churches that remain. How can churches and missionaries address the urgent need to reach unreached people without falling for quick fixes?

While Jesus offers forgiveness for believers who sin, Scripture makes it clear that Christians are to pursue obedience and holiness. So what does it mean to walk in a manner that’s “worthy of the gospel of Christ” (Phil. 1:27), and how should that look in the life of a Christ follower? In this short accessible guide, theologian Sinclair Ferguson explains the importance of living worthy of the gospel, why the principle is often forgotten, and how it’s cultivated.

Throughout Scripture, important biblical figures have faced numerous adversities with remarkable courage. In the New Testament, the apostles endured persecution, imprisonment, and even death for spreading the good news of the gospel. Yet, amid their struggle, they continued to expand the kingdom of God—even rejoicing as they suffered for Christ. How can believers exhibit this same courage today? In Courage, author Joe Rigney explores the Christian virtue of fortitude and its connection to the gospel.

In Humility, Gavin Ortlund explains that humility is not just an abstract virtue but a mark of gospel integrity, casting a vision for gospel-centered humility that is ultimately self-forgetfulness leading to joy.

Recent years have seen much controversy about the apostle Paul, his context, and its effect on his theology. In Four Views on the Apostle Paul: Audio Lectures, four leading scholars present their views on the best framework for describing Paul's theological perspective, including his view of salvation, the significance of Christ, and his vision for the churches.