This is a sermon by Rick Dunn. Rick was one of my youth ministry professors at Trinity International University. He then moved over to the seminary, Trinity Evangelical Divinity School to teach future youth pastors and pastors about effective youth ministry. He currently is the lead pastor at Fellowship Evangelical Free Church in Knoxville, TN.
Rick preached on Mark 9:35-37, though he is specifically addressing his church, it is a call for those who are Christ followers to be the Church to serve in the church, in the community and in the world. He has much to say about ministry to children and youth, as well as, the least, the last and the lost.
You can listen below.