Greek is holy because the emperor Ptolemy wanted a copy of the torah in Greek for his library in Alexandria. He then asked 70 Rabbanim to translate the torah into greek. He put the 70 Rabbanim in seperate rooms unable to communicate with other. They each made the exact same translation of the torah into Greek including I belive 5 changes. Like during creation, The torah says “Let us make man” they all translated it as “I shall make man” and the Emperor’s wife’s name sounded like the hebrew word for Rabbit and the torah says something not nice about a rabbit, so they changed that as well.
Since all 70 translations came out exactly the same inclduing the changes. It was seen as a miracle (and a bad thing to some as they thought now the non-jews could read the torah) from Hashem, so you can read the Torah in Greek.