This sermon is the fourth in a series of messages through the book of First John. This message covers 1 John 2:12-29 and speaks about the theme of spiritual maturity. In this passage, John addresses believers who are in various stages of spiritual development and tells them what spiritual maturity will enable them to do. He also provides the key or secret for growing in their knowledge and understanding of Christ. A video recording of the entire worship service in which this sermon was presented can be viewed here. Written excerpts of the sermon can be accessed here.