Jeremiah 34:14 verse
At the end of seven years let ye go every man his brother an Hebrew, which hath been sold unto thee; and when he hath served thee six years, thou shalt let him go free from thee: but your fathers hearkened not unto me, neither inclined their ear.

Genesis 7:2 verse
Of every clean beast thou shalt take to thee by sevens , the male and his female : and of beasts that are not clean by two, the male and his female.

Leviticus 21:4 verse
But he shall not defile himself, being a chief man among his people, to profane himself.