The power was given by Christ to the Apostles, who gave it to the bishops (= episcopoi, "overseers"), who delegated to the priests (=presbyteroi, "elders"). You can see this going on in the Paul's later epistles, where he talks about commissioning Timothy "by the imposition of my hands" and about "appointing elders in every town".
Nobody in the early church thought that just anyone could consecrate the Eucharist. St. Ignatius, who knew Peter, Paul, and John, went so far as to say that celebrating the Eucharist without the bishop's approval (which would certainly include celebrating it without an ordained elder) was no different than devil worship.
I am Sorry; I think you missed something in my question.
I asked if their were any scripture refferances that show that the host is transformed into the Eucharist via a Priest or appostle.
Do any of the house churches in the Acts or Epistles show that a priest was present at all the meatings, in every house to accomplish this every day.
I am seeing that the early church gathered together daily in thier homes to break bread or celebrate communion.
Did you misunderstand my question?