Genesis 7:2

Wycliffe Bible

² Of all clean living beasts, thou shalt take (with thee) by seven and by seven, male and female; forsooth of unclean living beasts, thou shalt take by twain and by twain, male and female; (Of all clean beasts, thou shalt take with thee seven pairs, male and female; but of all unclean beasts, thou shalt take only one pair, male and female;)