vayera IV

three one-use malakhim appeared as one
to herald Yitzhak and to rescue Lot
each cast aside as his sole task was done
and one to make the Sodom weather hot
for versatility you need a man
to hug a stranger or negotiate
more subtle than what the cherubim can
a sharper instrument (but not as straight)
nine tests Avraham passed out of his ten
and who's so bold to think he'd beat that score
mitzvot are needed if mere mortal men
can ever be expected to do more
two Judaisms to meet human need
one for avinu and one for his seed