True God From True God?

[DojoGrant]

I've always been curious:

What is the disctinction between "God from God" and "True God from True God" that causes both to be professed in the Nicene Creed?

[Adeodatus]

The heretic Arius, who thought of the Son as "timelessly created" obviously did not think that God the Son was God. But he was happy to call the Son "God", because he believed that the Father is God [b]by nature[/b], and that the Son is God [b]by grace[/b].

So saying that the Son is "God from God" was still acceptable to Arius, except that he gave it a devious twist (The Son is a creature, "made" into God). What Arius would not confess is that the Son is "true God" (alethinos Theos). For him only the Father is "true God". Hence this extra distinction put in the Creed, the Son is not only "God from God" but also "true God from true God".