King James Version
And she said, Behold my maid Bilhah, go in unto her; and she shall bear upon my knees, that I may also have children by her.English Standard Version
Then she said, "Here is my servant Bilhah; go in to her, so that she may give birth on my behalf, that even I may have children through her."New International Version
Then she said, "Here is Bilhah, my maidservant. Sleep with her so that she can bear children for me and that through her I too can build a family."