We live in a highly visual, interactive environment in the 21st Century. This has led to significant changes in the means of communication and of concentration spans. Some have argued that the church should respond to this and abandon the ‘traditional’ 40 minute sermon. John Piper argues strongly in this 6 minute podcast that the sermon is a unique genre of it’s own and that it is a vital component of a local church’s corporate worship. You can listen to what he says here: Is the 40 minute sermon passé?