There's an elephant in the room. He's called the Word. We're made in His image. In the image of a God who spoke and the universe happened. We're his testimony to the rest of creation, to the animal kingdom, of who he is - truth in community, the one who speaks graciously to make covenants which depend entirely on his speech-action, the one whose words always does exactly what he sends it to do. He breathed into us his breath, and we became different to the animals. We speak, we communicate, we commune. We are in the image of the God who is self-revelatory community.
We have rejected the author of our speech, the Word, so our speech is frustrated, and we mis-communicate and lie. We have refused the one who spoke in self-giving love to build the universe, and we use words to hate and murder rather than to love and build up. We are like the talking animals C S Lewis portrayed in The Last Battle: we refuse to worship the Word, the one who gave us his breath, so we become dumb. So when he wanted to redeem us to restore that image, the Father sent the Word, who took the lies, the mocking, the murder, and the broken communication of silence into his very heart, so that together they breathed again into us, dumb and bestial as we are, to give us his Spirit.
"How did this ability evolve? Why is it uniquely human?"
"When you start to think about it, it seems miraculous!"
Sometimes it really seems like we're sitting in a room, chatting, and asking aloud, "Why is this room so cramped? How did it become so dark and smelly in here?" "It seems almost miraculous!" But above all, let no-one whisper that there may be an elephant in the middle of the room. That's not scientific; we don't believe in elephants.
As C S Lewis said, "I believe in Christianity as I believe that the sun has risen, not only because
I see it, but because by it I see everything else." But for 'Christianity', replace it with Christ himself, the Word, and the one the universe is bursting to reflect and praise.
"From the mouth of babies and infants you have ordained praise, to silence the enemy."