“‘I was alive without the law once: but when the commandment came, sin revived’ (Romans 7:9). So it is with the work-righteous and the proud unbelievers. Because they do not know the Law of God, which is directed against them, it is impossible for them to know their sin. Therefore also they are not amenable to instruction. If they would know the Law, they would also know their sin; and sin to which they are now dead would become alive in them.” – Martin Luther
This teaching is critically important. To be properly instructed in how to effectively reach the lost with the gospel, you must begin with the biblical foundation for evangelism. Read this lesson very thoughtfully. Don’t let anything distract you as you discover what Charles Spurgeon called “our ablest auxiliary”—that is, our most powerful weapon.