It is true.
Dr.Güting really learned Coptic. Moses left Egypt (Exodus 12:37). Jesus entered Egypt and stayed there, until Herod was dead (Matthew 2:13-15). This was one of many preconditions for him to be the son of God (Hosea 11:1). Consequently, during the first centuries a strong Coptic church was established.
Thus Dr. Güting decided to learn Coptic to understand certain parts of the Bible much better.
And by the way... 
...Happy Easter and Peace on Earth!
