This sermon instructs believers on the principle of the first and second admonition found in Titus 3:10, applying it to the practical context of street evangelism. It argues that unsaved individuals possess a corrupted mind, heart, and will, evidenced by their lack of repentance and rejection of God's Word, yet they are still accountable through the witnesses of creation and conscience. The speaker emphasizes the necessity of discernment to identify those who are spiritually resistant, likening them to an unsatisfiable fire, and advises that after two clear attempts to present the gospel, the believer should respectfully disengage to avoid wasting time. This approach is contrasted with the positive outcome of engaging receptive individuals, leading to justification by faith and a changed standing before God, characterized by peace and access to grace.