G3423–μνηστεύω–mnēsteuō

And of Jesus Christ, the birth was thus: For his mother Mary having been betrothed to Joseph, before their coming together she was found to have conceived from the Holy Spirit,

μνηστευθείσης mnēsteutheisēs “At the pledging”

to a virgin, betrothed to a man, whose name `is' Joseph, of the house of David, and the name of the virgin `is' Mary.

ἐμνηστευμένην emnēsteumenēn “betrothed”

to enroll himself with Mary his betrothed wife, being with child.

ἐμνηστευμένῃ emnēsteumenē “betrothed”