Does God reveal Himself apart from Christ?

I believe that Christians in general would say that knowledge of God comes from the Spirit. (There is Scripture to back this up, though I don't have the exact verses handy; if someone wants to edit them in, please feel free.) Scripture also teaches that knowledge of the Father comes via the Son. (Some sects are adamant that knowledge of the Father can *only* come via the Son.) The (Western version of the) Nicene Creed states that the Spirit "proceeds from the Father and the Son". The Spirit comes from the Father and the Son; therefore, what comes from the Spirit also comes from the Father and the Son. However, Eastern Orthodoxy rejects [the "filioque"](https://en.wikipedia.org/wiki/Filioque) , insisting that the Spirit proceeds from the Father alone. Does this mean that knowledge of God can come *apart* from the Son? (I am looking specifically for **Eastern Orthodox** responses.)