Matthew records Mary's engagement to Joseph.
... When his mother Mary was betrothed to Joseph,
but before they lived together, she was found with child
through the holy Spirit. ... the angel of the Lord appeared
to him in a dream and said, "Joseph, son of David, do
not be afraid to take Mary your wife into your home.
For it is through the holy Spirit that this child has been
conceived in her. She will bear a son and you are to
name him Jesus, because
he will save his people from
their sins." He (Joseph) had
no relations with her until
she bore a son, and he
named him Jesus.