'Obtain' in the Bible

And Sarai said unto Abram, Behold now, Jehovah hath restrained me from bearing; go in, I pray thee, unto my handmaid; it may be that I shall obtain children by her. And Abram hearkened to the voice of Sarai.

And she said, Behold, my maid Bilhah, go in unto her; that she may bear upon my knees, and I also may obtain children by her.