This document discusses how the faithfulness of just a few individuals can make a significant difference and preserve righteousness. It provides examples from the Bible of how Noah preserved humanity, Lot could have preserved Sodom and Gomorrah if more were righteous, Abraham preserved God's promise, Joseph preserved Israel, exiles like Daniel and Esther preserved God's people, Jesus preserved salvation, and faithful Christians today preserve the purity and peace of the church. The conclusion emphasizes that Christians must be willing to be the "salt of the earth" or else critical institutions and values for future generations will be lost.