And she said
'amar (aw-mar')
to say (used with great latitude)
Behold my maid
'amah (aw-maw')
a maid-servant or female slave -- (hand-)bondmaid(-woman), maid(-servant).
Bilhah
Bilhah (bil-haw')
timid; Bilhah, the name of one of Jacob's concubines; also of a place in Palestine -- Bilhah.
go in
bow' (bo)
to go or come (in a wide variety of applications)
unto her and she shall bear
yalad (yaw-lad')
to bear young; causatively, to beget; medically, to act as midwife; specifically, to show lineage
upon my knees
berek (beh'-rek)
a knee -- knee.
that I may also have children
banah (baw-naw')
to build (literally and figuratively) -- (begin to) build(-er), obtain children, make, repair, set (up), surely.
by her