A testimony is a witness from the Holy Ghost that something is true. That witness may come in a dramatic way, as we sometimes read about in the scriptures, but usually comes through a quiet assurance—feelings of peace, joy, and love when we pray to God and when we hear or read truth. A testimony may at first be nothing more than a desire to believe, but it has the potential to grow into unshakeable faith as it is strengthened by experience and nurturing.The foundation of testimony for members of The Church of Jesus Christ of Latter-day Saints is the doctrine that Jesus Christ is the Savior of the world. We can receive our own testimonies of His divinity and redemptive role in our lives. We can also receive our own witness of God’s love for each of us, the Book of Mormon and other scripture, the calling of prophets and apostles, and the wisdom of the commandments.Testimony grows gradually through conscious work. Study, prayer, and obedience to God’s commandments are all important parts of gaining and strengthening a testimony. Our testimonies also grow as we share them with others, for as we teach and testify of eternal truths, we are reminded of them ourselves. A testimony is never completed; it is always growing, maturing, and evolving as we continue to ask questions and deal with doubts.Each devotional given at BYU contains a powerful witness, borne by scholars, professionals, and ecclesiastical leaders alike. These speeches, however, are especially focused on the nature of testimony and how we can each develop and nurture our own unique, personal testimonies. Whether your testimony (or any part of it) is strong, stagnant, or struggling, these talks can help you as you grapple intellectually and spiritually with your faith.