Word Order in a Sentence

[tianung]

I know the order of words in a sentence can be re-arranged and still retain the meaning of the original sentence.

Just like to know which of these are grammatically correct variants of "He is going to church."

1. To church he is going. (Would you hear something like this in songs?)

2. To church is he going.

3. To church going he is.

4. Going to church he is. (Sounds like Yoda but is it grammatically correct?)

I think 3 is wrong but what about the rest? Thanks for your help.

[Alan]

Only 1 (and even that is archaic!)