G3423–μνηστεύω–mnēsteuō

Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.

μνηστευθείσης mnēsteutheisēs “At the pledging”

To a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin's name was Mary.

ἐμνηστευμένην emnēsteumenēn “betrothed”

To be taxed with Mary his espoused wife, being great with child.

ἐμνηστευμένῃ emnēsteumenē “betrothed”