How Great Thou Art
Gospel songs go best in the key someone can easily sing. For How Great Thou Art that key is Bb, in my opinion. This is a good key on violin, too. You can easily use the open strings, except for E. The third note of the scale is D, and that tunes in to the D string, helping your intonation.
You will ned to use your fourth finger for the Eb note on the A string and the Bb note on the E.
Then, start with the second finger in the low position on the G string. From there, you can use the open D and A strings in the scale.
Here is the link for the pdf chart
Another Gospel song for fiddle is the best known of all, Amazing Grace.