Emphasis in the Qur’an
Why is emphasis important? It proves truthfulness. For example, if you says “Khalid stopped by today” and your friend says “Khalid didn’t stop by today,” and you say “I swear by Allah that he stopped by today,” that proves your truthfulness.
Allah (سبحانه وتعالى) doesn’t need any emphasis–what He says is always true! Yet He still emphasizes. Whenever He emphasizes something, pay close attention, and realize that what He says immediately afterward is very important.