I am become a stranger
zuwr (zoor)
to turn aside (especially for lodging); hence to be a foreigner, strange, profane; specifically (active participle) to commit adultery
unto my brethren
'ach (awkh)
a brother (used in the widest sense of literal relationship and metaphorical affinity or resemblance (like 1) -- another, brother(-ly); kindred, like, other.
and an alien
nokriy (nok-ree')
strange, in a variety of degrees and applications (foreign, non-relative, adulterous, different, wonderful) -- alien, foreigner, outlandish, strange(-r, woman).
unto my mother's
'em (ame)
a mother (as the bond of the family); in a wide sense (both literally and figuratively) -- dam, mother, parting.
children
ben (bane)
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or condition, etc.