The Book of Mormon makes it clear that Isaiah's message is of great importance to the modern reader. In order to facilitate modern and personal spiritual application of Isaiah's writings, spiritual "formulas" or principles may be discovered or formulated. These formulas are statements of truth based on the prophet's writings that may be applied in multiple situations and time periods. Such formulas of truth offer valuable insighst across time. These formulas may be understood by analyzing the historical setting of the chapter(s) under review, and through critical examination of the text itself. These formulas provide a solid foundation upon which can be built the framework of personal application. The burden chapters of Isaiah (chapters 13-23) each offer an important formula that can have powerful spiritual application. This work explores each burden prophecy, using historical research and critical analysis of the text to postulate a formula. Each burden chapter has its own message that can lead to spiritual insight.