No Eden, no Flood, no Ark, No Return,
This is nothing more than the Jesus Seminar with an Orthodox bent. Let's vote with different colored beads in front of an Icon. Let's automatically reject anything that sounds supernatural, because we all know that the supernatural is impossible.
Who was Jesus?
Nice guy, friendly guy...had some religious tendencies. Got killed for them.
The disciples believed he "rose again" in their hearts. And He'll return some day...."in their hearts."
They don't have to believe in the scriptures because they have their church and, of course, their church could never steer them wrong.
How do they know?
Because the scriptures tell them so.
The Orthodox call Mary the Theotokos, which is the Ark which carried God. Yet they are some free (if not encouraged) to deny the existence of the Ark, or the truth of Exodus and the Ten Commandments written on the tablets of stone that were carried in the Ark of the Covenant.
By denying the Exodus and the Ark they essentially deny the basis upon which Mary became the Ark, the Theotokos. If there was no Ark, then there was no God carrier in Mary. The Orthodox undermine their own beliefs by their disbelief.
Your expertise is amazing.