Yes Anastasia gave some good material. I am looking for the specific teaching on it from the East word for word on it. And I would like also to know in the East teaching of Adam; who was he and was he create in Theosis before He sin? And how do people now get to this state of Theosis now?
More good questions.
I can answer less fully about Adam, but I will try.
Adam was created without sin, of course. All of the creation just described at that point was "very good". But there was a certain immaturity to Adam in the sense that He was not yet what God intended for him to become.
Was he in the process of theosis? I've never heard that question asked, so I don't know the technical answer. I would guess we can say yes? It makes sense, but better to ask someone who knows more.
Your other question is a good one too ... I'm debating if it's one I should tackle.
Ok, I will say this. I am not sure where it's proper to draw actual lines for the terms. But the process has been discussed, and some Church a Fathers may break it down a little differently, and label it differently - I don't think that makes anyone "wrong" since overall the same process is described. I will give you what I know best, which I think is the most common description. Again, please ask if anything seems unclear or questionable, and I welcome correction or clarification from my Orthodox brothers and sisters.
There needs to be some restoration of communion with God. Typically we see this as being initiated or sealed with the sacrament of baptism. I think that is important to mention.
There is often a process of theosis described in terms of purification, illumination deification. These are not really discrete stages where a person is absolutely finished with one then moves absolutely into the next, never to return. Rather, the transitions involve some overlap.
One must first come to a knowledge of God. Becoming aware of Him, believing in Him, getting to know His commandments, and so on. One should read the Scriptures, listen to the teachings, spend time in His presence in worship and in prayer. (What I just said one should do - continues of course through all stages.)
Purification involves effort on our part in cooperation with the help of God. The Church offers disciplines, and teaching to help. This I think is a huge stage for most of us. We purify our thoughts, our actions, our desires. We try to avoid sin, and we try to change those things in us that lead to sin. In the process, we are changed, and become more like Christ. This is not merely an effort on our part, but can be accomplished only with the help of God. But we are not passive.
When some degree of purity is attained, one begins to receive more illumination, more of the vision of God. One receives insights into creation, the work of God in all things. This effects further change in the person, making them even more like Christ, and helps cement those things attained by way of purification.
The final stage - deification - is not easy to speak of. I will probably say this in a clumsy way, but the Holy Spirit abides closely in a person at this stage. Sometimes we can describe such a person using some examples from the Saints, and how God has acted through them. I can't really say more.
I see that I actually said much more than you were asking, in an effort to answer your question, and still failed to answer it.
The best way to get on the path to theosis - well, since I determined that Orthodoxy was right and I wanted to become Orthodox, I was baptized and received into the Church. I go to Liturgy and receive communion. I keep my prayer rule, and have the benefit of a spiritual father who keeps me on track and recommends reading. I read the Scriptures. I watch my thoughts, actions, and feelings, and try to bring everything into alignment with God's commandments, and when I fail, I ask forgiveness and try again. I keep the fasts (except when medically prevented). I go to confession. Most of all, I try to treat everyone with the love of God, as far as I'm able.
Ah, I'm STILL saying too much. I don't want it to sound as though we think we "buy" or "merit" salvation through our works. We absolutely do not.
But we do our best to live a Christian life, and those efforts will change us. Believe it or not, not only our successes, but also our failures, since we learn humility and our absolute need for God's help in them.
That's really all it is - live a Christian life. Cooperate with God in a process that is absolutely His will for us, since He desires all to be saved.
But being Orthodox, I am grateful that the Church offers so much assistance and so many tools to help in this, as well as guidance based on many centuries of experience. So for that reason, I include all of the above in my answer.
I apologize this is so long. You ask questions that are both deep and simple at the same time. The best kind, I think.
