Another purpose of emphasis is dafʿ tawahhum al-tajawwuz: preventing the hearer from interpreting an attribution figuratively where literal agency is intended.
أَوْ لِدَفْعِ تَوَهُّمِ التَّجَوُّزِ
Or to dispel a possible suspicion of figurative use.
For example, expressions involving what a ruler “did” may conventionally refer to what was performed on his orders. Appropriate emphasis can instead indicate personal performance. Such reinforcement is more than loudness or intensity: it becomes a contextual cue against a figurative reading.