According to the Catholic Bible, Noah was commanded — "Of all clean beasts take seven and seven, the male and the female. But of the beasts that are unclean two and two, the male and the female. Of the fowls also of the air seven and seven, the male and the female."
For the purpose of belittling this miracle, many commentators have taken the ground that Noah was not ordered to take seven males and seven females of each kind of clean beasts, but seven in all. Many Christians contend that only seven clean beasts of each kind were taken into the ark — three and a half of each sex.
If the account in the seventh chapter means anything, it means first, that of each kind of clean beasts, fourteen were to be taken, seven males, and seven females; second, that of unclean beasts should be taken, two of each kind, one of each sex, and third, that he should take of every kind of fowls, seven of each sex.
It is equally clear that the command in the 19th and 20th verses of the 6th chapter, is to take two of each sort, one male and one female. And this agrees exactly with the account in the 7th, 8th, 9th, 14th, 15th, and 16th verses of the 7th chapter.
