It is not all obvious that consciousness precedes language. Hellen Keller provides a vivid description of her pre-verbal mental state as something less than reflective conscious.
> Before my teacher came to me, I did not know that I am. I lived in a world that was a no-world. I cannot hope to describe adequately that unconscious, yet conscious time of nothingness. I did not know that I knew aught, or that I lived or acted or desired. I had neither will nor intellect.
> Before my teacher came to me, I did not know that I am. I lived in a world that was a no-world. I cannot hope to describe adequately that unconscious, yet conscious time of nothingness. I did not know that I knew aught, or that I lived or acted or desired. I had neither will nor intellect.
https://scentofdawn.blogspot.com/2011/07/before-soul-dawn-he...