Opposition in all things is a key doctrinal principle that shapes the understanding of human experience and spiritual progression. This concept asserts that contrast, whether between good and evil, light and darkness, joy and sorrow, is necessary for individuals to learn, choose, and grow. According to Latter-day Saint beliefs, opposition serves both as a catalyst for the exercise of agency and as a vital part of God's eternal plan for His children. In this view, opposition is not a flaw in God's design, nor is it an obstacle to spiritual progress; rather, it is an essential and purposeful part of human experience, placed within the context of mortality to encourage growth and eternal progression.

The foundation of the doctrine of opposition is taught in the Book of Mormon, particularly in 2 Nephi 2:11-12, where the prophet Lehi teaches that "there must be opposition in all things." Lehi argues that without opposition, there would be no righteousness or wickedness, neither joy nor misery, and no good or bad. These contrasts are vital because they provide the context in which individuals can exercise their agency—one of the primary gifts given by God to His children. Agency, according to Lehi, is essential to God's plan because without it, humans would be unable to choose good over evil or grow spiritually through trials and decisions. Therefore, opposition is not simply a challenge to endure but a divine framework that allows for the development of godly attributes such as patience, humility, and faith.

This concept is also linked to the event known as the Fall of Adam and Eve, which Latter-day Saints interpret not as a tragic mistake, but as a necessary part of God's plan for human progression. As the first parents partook of the fruit of the tree of knowledge of good and evil, they introduced mortality, suffering, and, critically, opposition into the world. According to the teachings in 2 Nephi 2:25, "Adam fell that men might be; and men are, that they might have joy." Without opposition—without the capacity for error, suffering, or choice—human beings would not have the chance to experience or appreciate the fullness of joy that comes through the process of learning, repenting, and growing. By embracing the opportunities for learning provided through opposition, individuals can progress toward becoming more like God, who uses contrast to refine, purify, and shape His children.

The understanding of opposition in Latter-day Saint theology differs from other religious traditions in significant ways. Many faiths view suffering and adversity as negative, undesired experiences that may result from human sin or imperfection. In contrast, Latter-day Saints regard opposition as a necessary and beneficial part of God's plan for His children. While other faith traditions may frame suffering as a consequence or a trial imposed upon the faithful, Latter-day Saints see opposition as a cornerstone of spiritual growth and development. For instance, within some Christian traditions, the Fall of Adam and Eve is seen primarily as a punishment for disobedience, while Latter-day Saints emphasize that it was a necessary and purposeful event that made progress possible. Without the concept of opposition as a positive force, humans would not have the conditions necessary to grow toward perfection and immortality.

In adopting this perspective, Latter-day Saints derive a unique benefit. Opposition can be framed as a powerful tool in one’s spiritual journey rather than as an indication of divine neglect. As a result, Latter-day Saints are encouraged to face life's difficulties with hope, trusting that these challenges provide opportunities to become more like Christ. Suffering and hardship are not signs of divine displeasure but rather part of the divine curriculum, preparing individuals for an eternal future full of joy. This outlook fosters resilience, as it teaches individuals to embrace challenges and learn from them rather than be overwhelmed or discouraged by them.

Understanding opposition as necessary places Latter-day Saints and others interested understanding answers to the problem of evil at an advantage. The problem of evil is the question of how evil can coexist with an all-loving God. Shouldn’t God, being all-loving, stop evil? Lehi’s statement gives us a ready-made part of the answer: “good” cannot be understood without experiencing its opposite.¹⁸¹

Furthermore, understanding opposition as a positive element allows Latter-day Saints to view their struggles not as roadblocks but as stepping stones toward spiritual refinement and ultimate salvation. While other faith traditions may see opposition as purely negative, Latter-day Saint teachings enable individuals to navigate trials with the confidence that each challenge contributes to their divine potential. Through faith in Christ’s Atonement and the exercise of agency in the face of opposition, individuals can find the strength to progress toward exaltation, turning opposition into an opportunity for growth and eternal joy.