AMEN

At the conclusion of the prayers the server answers “Amen,” a Hebrew word meaning “may it be so.” The custom of thus answering amen at the end of the prayers is evidently derived from the old law, for we find it in nearly every book of the Old Testament, and it is also very common in the New. According to Cardinal Bona (Divina Psalmodia, p. 532), it is one of those words which the translators of the Bible left untouched, lest by rendering it in any other language but its native Hebrew its power and beauty might be lost.