People, in the Human World, Words Matter. Whether they are written or spoken.
Humans mostly communicate using words, whether those words are actually spoken or written. And they usually pay attention to each other's words; and build their actions and reactions around them.
The Word Qur'an means "Reading." Or "To Read."
And the Qur'an Karim is all words -- from beginning to end: from Al-Hamdu and Alif, Laam, Meem to Annaas.
And, of course, every one of those words is packed with meaning that we cannot even fathom or imagine.
Hadith Sharif says, what I am paraphrasing here:
"Every individual letter of the Qur'an is full of blessings
and rewards and benefits, whether that letter is Alif, or
Laam or Meem."
And Muhammad, Sallallahu Alaihi wa Sallam, says -- in paraphrase:
"Words uttered by your tongue will send you to
Jannat or Jahannam: Hell or Heaven."