Cosmas Indicopleustes

as if in answer to the question What then is the law? meaning, Why was the law given? he at once replies and says: It was added because of transgressions till the seed should come to whom the promise hath been made; and it was ordained through angels by the hand of a mediator; whereby he means, that the reason why the law was added was this, that by means of it and of the priesthood the people which had received the promise should be under safe guardianship—the people, namely, sprung from Abraham—and that there should be no intermixture of this people with any other; so that thereby he who had been foretold might be recognisable by all—he, by whom the world is being renovated, and by whom also the purpose and economy which God had from the first designed is being fulfilled.