The same: Yesterday, Today, and Forever.
"In the Church the past is forever contemporaneous; the present in the church is forever the present by means of the living past, [because] the God-man, Christ, who is the same yesterday, today and forever (Hebrews 13:8), ceaselessly lives in the His Divine-Human body by means of the same truth, the same good, and the same life forever making the entire past and present.
So, what does it mean to be Orthodox? It means: to be constantly struggling away from man toward the God-man, to be constantly making oneself divine-human through struggles.
When examining our own spirit, the Orthodox Christian says to himself: my spirit is nothing unless I fill it and perfect it with the Holy Spirit" (Archimandrite Justin Popovic).