American Standard Version (ASV):
and he said, When ye do the office of a midwife to the Hebrew women, and see them upon the birth-stool; if it be a son, then ye shall kill him; but if it be a daughter, then she shall live.
King James Version (KJV):
And he said, When ye do the office of a midwife to the Hebrew women, and see [them] upon the stools; if it [be] a son, then ye shall kill him: but if it [be] a daughter, then she shall live.