Conjugation of the Verb – To Be - Imperative Mood.
Be! (Be you! / Be thou!)
[Present Tense - 2nd Person - Singular.]
Be! (Be you! / Be ye!)
[Present Tense - 2nd Person - Plural.]
Homework.
Find/note/figure out/list/observe carefully, whenever/wherever The verb To BE is conjugated in above.