Bible Verses About Priests: During patriarchal age heads of families acted as

And Noe built an altar unto the Lord: and taking of all cattle and fowls that were clean, offered holocausts upon the altar.

And passing on from thence to a mountain, that was on the east side of Bethel, he there pitched his tent, having Bethel on the west, and Hai on the east: he built there also an altar to the Lord, and called upon his name.

And he built there an altar, and called the name of that place, The house of God: for there God appeared to him when he fled from his brother.