'Sister' in the Bible

“You have ravished my heart and given me courage, my sister, my [promised] bride;You have ravished my heart and given me courage with a single glance of your eyes,With one jewel of your necklace.

“How beautiful is your love, my sister, my [promised] bride!How much better is your love than wine,And the fragrance of your oilsThan all kinds of balsam and spices.

“A garden enclosed is my sister, my [promised] bride—A rock garden locked, a spring sealed up.

(The Bridegroom)“I have come into my garden, my sister, my [promised] bride;I have gathered my myrrh along with my balsam and spice [from your sweet words].I have eaten my honeycomb with my honey;I have drunk my wine with my milk.Eat, friends;Drink and drink deeply, O lovers.”

(The Shulammite Bride)“I was asleep, but my heart was awake.A voice [in my dream]! My beloved was knocking:‘Open to me, my sister, my darling,My dove, my perfect one!For my head is drenched with the [heavy night] dew;My hair [is covered] with the dampness of the night.’

(The Chorus)“We have a little sisterAnd she has no breasts.What shall we do for our sisterOn the day when she is spoken for [in marriage]?