Why is understanding important in worship according to the Bible?

Paul stresses that communication in worship must be clear and understandable to build up the church. In 1 Corinthians 14:4, he notes that speaking in tongues edifies only the speaker unless someone interprets. Worship must involve the congregation's comprehension so they can be encouraged and comforted. Without understanding, the preacher's efforts are wasted as there is no fruit, and worship can become mere chaos if it's not communicated effectively. Therefore, clarity in preaching and teaching is essential for fruitful worship.