Reading silently, would be receptive language and writing to someone would be expressive language. Each of us understands far more than we express . This dramatic discrepancy in our expressive and receptive skills is a glimpse of our God given abilities to receive communications from a higher source. But only if we ask. Seek and you shall find.
Language is a cortical organization and processing talent.
Your individual Focus and Will power control your language application skills. The genetic codes God bestowed upon you included your individual unique biological computer, your brain. This powerful and magical tool was given to you, for your use while on this earth. A gift especially provided for acquiring knowledge. Yes, you really do have a guardian angel.