These classic Bible studies have cumulatively reached millions for a reason — it's because they're still relevant. Each is packed with practical, biblical advice that can change your life. Some look inward to better yourself, some look outward to better your relationships with others, and some look upward to strengthen your relationship with God. And each study has been around long enough to earn a revision and/or expansion.

Revisit one of these "classics" or check out one you've never studied.

1. Experiencing God by Henry Blackaby, Richard Blackaby & Claude King

Experiencing God by Henry and Richard Blackaby

How can I know what God wants me to do and then actually do it? Ah, the age old question. It always comes back to this, doesn't it? So maybe the subtitle — Knowing and Doing the Will of God — is what has drawn so many to this quintessential study. But based on participant's online reviews, it's the content that keeps Experiencing God in people's hands.

This revised and expanded edition guides learners to experience the kind of real relationship with God that opens believers up to knowing and doing His will. Through 13 weeks of study, participants understand and apply seven realities of experiencing God.

Bonus: Get the new Experiencing God Documentary (DVD) which explores stories of how the study has impacted lives.

2. The Mind of Christ by T.W. Hunt

The Mind of Christ by T.W. Hunt

The mind is a terrible thing to waste. It's also a tough thing to wrangle. No matter how hard we try, thoughts of fear, worry, negativity, and more creep in (and often creep out). Wouldn't it be great if we could be wiser, have better attitudes, and think like Jesus? The Mind of Christ says we can and then shows us how.

This in-depth, 13-session discipleship study is a great study for all Christians. Based on Philippians 2:5: "Let this mind be in you, which was also in Christ Jesus," the study shows you how Jesus' mind worked and how the Holy Spirit can teach you to think as He did. Using real-life examples to illustrate the enlightening principles, The Mind of Christ is the introduction to a lifelong process of allowing God to renew your mind and life to reflect our only perfect role model.

3. The 5 Love Languages by Gary Chapman

The 5 Love Languages by Gary Chapman

Do acts of service float your love boat, or are words of affirmation what really make your heart go pitter-patter? Even if you've never read The 5 Love Languages, chances are you've heard of these "languages" before. This study has blurred secular lines, as many people — Christian or not — experiencing trouble in their marriages have turned to this study for answers. And they have found them.

Chapman's philosophy has changed the way couples interact, and many claim that it has even saved their marriage. By helping you understand that people show and receive love in different ways, The 5 Love Languages has proven to be a good communication tool for all relationships. With the love language profile and practical suggestions for enriching your marriage, this resource has given people hope, helped them look at their spouses differently, and proven that the best way to say "I love you" doesn't always include words.

Also, learn more about The Five Love Languages for Children and The Five Love Languages of Teenagers.

4. The Search for Significance by Robert McGee

The Search for Significance by Robert S. McGee

"I didn't get the promotion — I'm useless. I should be thinner. I should have my life together by now. I'm a failure." Lies like these — the ones we tell ourselves that make us feel worthless — are straight from the pit of hell. Christian or not, self-worth is a struggle. But as believers, we have the chance to see ourselves through God's eyes. Learning to recognize Satan's lies, rely on God's truth, and avoid the need for approval and performance-based traps is a wonderful concept, but actually building a healthy perspective on self-worth sounds easier said than done. Right? Well, The Search for Significance has helped millions learn how to enjoy Christ's love while no longer basing their self-worth on accomplishments or others' opinions. Even Billy Graham said that it "should be read by every Christian." Who are we to argue with the Rev. Graham?

The eight-session study provides practical learning activities that help believers sort themselves out by applying God's truth and gaining a real sense of self-worth. Who couldn't use that?

5. Breaking Free by Beth Moore

Breaking Free Bible Study by Beth Moore

Beth Moore is a classic in and of herself. She has impacted countless women around the world through her many studies and events. But Breaking Free is special because Beth considers this her life message to share.

Women can't stress enough how life-changing this study is, insisting that who they were on week one was not the same person week 10. Many of us are entangled in spiritual bondage that we may not even realize. Spiritual bondage sounds intense! And it can be. Legalism, pride, generational sin, and the like hold us back from really living. Using Scripture to help identify spiritual strongholds, no matter how big or small, Beth explains that anything that hinders us from the benefits of knowing God is bondage.

This 10-session study draws parallels between the captive Israelites of the Old Testament and New Testament believers in Jesus to discover the transforming power of freedom in Jesus Christ. God intends for us to know and believe Him, glorify Him, experience His peace, and enjoy His presence. This updated edition includes testimonies of women who have been delivered from personal captivity.

6. The Purpose Driven Life by Dr. Rick Warren

The newest title in this list of classics, The Purpose Driven Life hit No. 1 on the four major bestseller lists when it first released in 2002 and spent 10 unprecedented years as the best-selling non-fiction hardback in history. Today people are still wondering, "Why am I here?" Which is why this book still easily finds its way into hands of non-believers and believers alike. Everyone needs purpose, and a whole lot of people have turned to The Purpose Driven Life to find it.

The 10th-anniversary edition of includes God's five main purposes from the original book plus two new chapters and fresh insights, and is divided into 42 short chapters (six weeks) that can be read as a daily devotional, studied by small groups, and used by entire congregations. The Purpose Driven Life guides readers to discover God's amazing plan for them both now and for eternity as they take a spiritual journey that will transform the answer to life's most important question: What on earth am I here for?

Find a Bible Stud_y_ for your group.

Larissa Arnault is a writer and editor in Nashville, Tenn.