The Torah is the first and most sacred portion of the Tanakh or Hebrew Bible, and it was originally written in Hebrew. The Torah is written on a scroll by a scribe (sofer) in Hebrew. However, the original composers of the Torah wrote in a paleo-Hebrew alphabet, which is a more ancient form of the language. Aramaic was the colloquial language spoken by Jews both in Babylonia and Israel in the centuries surrounding the dawn of the first millennium, and it became the language of the people in the later years of the first millennium BCE. Although there are Aramaic expressions in the Torah, the main language of the Torah was Hebrew.
It is worth noting that the Torah has been copied by hand over and over again for thousands of years, and it is possible that elements of other languages were incorporated into the text. Additionally, some people believe that only part of the Torah was written in Hebrew, while others believe that parts were written in different languages altogether. However, the most widely accepted view is that the Torah was written in Hebrew.