By whom?
By the people who would have said "Christ is risen" back when it happened.
Greek and Aramaic were the common languages then and there even among the Hebrews, no?
The scholars mostly seem to agree that Jesus would have known Hebrew but would have spoken and taught primarily in Aramaic (correct me if I'm wrong here - I'm not an expert on Biblical scholars and their opinions).
And the New Testament was certainly written in Greek.
Even back then, Hebrew was limited primarily to scholars and official religious (Jewish) purposes. At least, I think so. If anyone knows for sure, I'd be glad to learn.