This is how the birth of Jesus the Messiah came about: His mother Mary was pledged to be married to Joseph, but before they came together, she was found to be pregnant through the Holy Spirit. (NIV)

Now the birth of Jesus Christ took place under these circumstances: When His mother Mary had been promised in marriage to Joseph, before they came together, she was found to be pregnant [through the power] of the Holy Spirit. (AMP)

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. (KJV)