While barren, she gave her Egyptian maid Hagar to Abraham to bear his children
Therefore he treated Abram well for her sake; and gave him sheep and oxen and 
... Genesis 25:21 And Isaac entreated the LORD for his wife, because she was 
barren:  [DOC] [TLE] Genesis 16:2 so she said to Abram, "The LORD has kept me from ... [PAR] Please go in to my maid; perhaps I will obtain children through her.