Erlo Stegen emphasizes that youth should not be despised, as God can work through young people to fulfill His purposes, citing biblical examples like Joseph, David, and Josiah. He encourages young believers to live exemplary lives in faith, purity, and conduct, as their actions can influence others' perceptions of Christianity. Stegen warns against hypocrisy, highlighting that the behavior of Christians can lead others away from the faith. He urges young people to commit to God now rather than waiting until they are older, and to avoid ungodliness in all forms. The sermon calls for a commitment to integrity and accountability in living out one's faith.