Most people interpret the word "lead" as first position or superiority. When it refers to sharing the faith in the Lord Jesus, it may not apply. Another definition of the word "lead" is to go with one by holding them by the hand, while moving forward. Leading is a partnering effort of the learned and the learner in our life groups that will fulfill the Great Commission. Your testimony is your story of faith and it has the ability to lead others to salvation.
Matthew 28:19 "Go, therefore, and make disciples of all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Spirit."
Romans 10:15 "And how are they to preach unless they are sent? As it is written, "How beautiful are the feet of those who preach the Good News."