Matthew 1:25

And knew her not till she had brought forth her firstborn son: and he called his name JESUS.
— Matthew 1:25, King James Version

In other translations

World English Bible (WEB)

and didn't know her sexually until she had brought forth her firstborn son. He named him JESUS.

American Standard Version (ASV)

and knew her not till she had brought forth a son: and he called his name JESUS.

Young's Literal Translation (YLT)

and did not know her till she brought forth her son--the first-born, and he called his name Jesus.