Hugely frustrating to have to deal with these "what about Greek temples -> churches" accounts. Let's quickly explain the giant hiatus you've inserted into history.
Greek East (Classical/Byzantine) found its fulfilment/expression through the theological achievement of the Church Fathers of the Greek East in Christian antiquity.
Notably the Cappadocian Fathers, Dionysius the Areopagite, Maximus the Confessor and Gregory Palamas.
The Hellenic tradition of both Classical and Christian times = principle of apophaticism in the approach to metaphysical debate. It's a decisive manner for dealing with questions of ontology and for understanding/ advancing claims to the real or true.
This common basis in the Hellenic & Christian philosophy prevents identification of the real with the formulations used to allude to it and gives precedence to an experiential substantiation of what is proposed, inviting a path to a communal validation.