NET
18 Now the birth of Jesus Christ happened this way. While his mother Mary was engaged to Joseph, but before they came together, she was found to be pregnant through the Holy Spirit.
Darby
18 Now the birth of Jesus Christ was thus: His mother, Mary, that is, having been betrothed to Joseph, before they came together, she was found to be with child of [the] Holy Spirit.
KJV
18 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.