"Fr. Sophrony Sakharov says that to be created as person is to be created potentially and not actually. That is to say, there is something very “open-ended” in our existence as persons. It is not a limiting term but a term which describes something of infinite capacity. We are created potentially, because we are not yet what we shall be. We are commanded to be conformed to the likeness of God - and this is our goal in Christ. This is far more than moral perfection, but has an ontological meaning as well. Indeed, when Scripture speaks of this aspect of our destiny it generally does not speak in moral terms, but in terms of knowledge and relationship."
http://fatherstephen.wordpress.com/2007/08/28/knowing-the-personal-god/