I've listened to John Vervaeke talk on Tillich, but I remain ignorent on that part. But it's more about universal symbolism rather than only Christianity?
Yes. Tillich was a Christian simply because that's the religion he was raised in.
So in your view, the Old testement, Abraham etc is God's revelation as he could have revealed himself to others?
I don't regard the Old Testament as comparable to modern history, so it really doesn't matter that much to me. The Old Testament is the prologue to the New Testament. My religion is centered on the person of Jesus, not Abraham.
Could it be said, that some religiouns are closer to the real identity of God? As I understand Buddhism, it doesn't really have a deity to begin with?
It's a very different worldview from Evangelicalism and doesn't fit within the usual categories of religion, and is built around very different ego structures. Carl Jung's notion of archetypes are probably closer to how Buddhism would think about God or gods.
While many of the practices may be useful, it seems lacking in other parts, whereas the jews seem to wrestle much closer to a personal creator.
In Jewish mysticism, God isn't regarded as a personal being, since that would be a limitation on God. There are forms of Jewish theology, such as Martin Buber's, that are more about a personal being, but that isn't the only way that Jews relate to God.
For that matter, there have been Christians besides Tillich that have taken this approach. Like the medieval German mystic, Eckhart.
I still need to read Barfield. But you would agree in Lewis on Christianity being a true myth? In what way do you believe in Jesus and his resurrection if I may ask?
It depends on what kind of Christianity we are talking about, I suppose.
I believe in Jesus resurrection but I don't share American Evangelicals certainty about the mode of his resurrection. My metaphysical presuppositions are such that parsing out exactly what is meant by "bodily resurrection" is irrelevant, since I am more inclined towards subjective idealism or process metaphysics, anyways (Barfield and Lewis were both subjective idealists, and Lewis would not have agreed with American Evangelicals implications of a "bodily resurrection").
I think the story of Jesus invites us into a new vision for human life, similar to St. Francis centuries later. I am mostly influenced by Marcus Borg's Jesus scholarship, that Jesus was a "spirit person" or mystic, and I accept that
most of the miracles in the Synoptic gospels attributed to him happened. That's not that rare among liberal scholars, since there seems to be a consensus that Jesus was a faith healer.
Would that be closer to a Symbolic/metaphoric interpretation rather than both a physical historic event and a Symbolic event?
It would be closer to symbolic interpretations.
I agree, you can find respectable teachers in Islam, and not so much in Christianity.
I am more impressed by Sufis I have encountered. However, there is also alot of religious fundamentalism in Islam, and alot of uncritical acceptance of religious traditions. Form criticism of the Quran, similar to what started happening with the Bible two centuries ago, is something that is relatively new, and hasn't had significant impacts on average Muslims religion, yet.
You have to have a measure of discernment. Many people are religious for very superficial and self-serving, worldly reasons, and they don't really understand alot of what they are talking about. Lots of wolves in sheep's clothing or the blind leading the blind. Besides doctors and politicians, machiavellian personalities are also highly attracted to clergy and religious leadership.