I have played the piano/keyboard since age of nine I have never had to back up a preacher or do the shouting music thing and now I feel overwhelmed sinced joining this new church with no muscian I know all eyes are on me and I do not know how to learn this stuff. Is this something learned or God given?
The chords themselves are learned, but the talent or gift for music comes from God. Don't think just because someone has the gift of music that they can play anything known to man w/out practice. Every musician has to practice something in order to be able to play it correctly.
Your situation sounds like so many others that I've come across. As soon as you learn a few notes and chords, the church wants to make u the church musician and expects u to sound like a person who's been playing for years. This is so discouraging for beginning musicians that I see why some of them want to quit. It takes years (yes I said it, YEARS) before you will be even half as good as you want to be. That's with or w/out God given talent.
My advice to you is to explain to your church that you can't play everything. It will take time before you can play the style that they want to hear. In the meantime, what u can do is work on what u want to play, and slowly work that into a church service. Don't feel bad if u can't play something at the moment cuz we've all been there.
There are tons of posts on here dealing with preaching chords and shout music chords. Just do a search for it and you should find what you're looking for.