Hi John,
If you're looking for that authentic "Black Gospel" sound, there are a few of those on the PA600 (which I think are also on the 800).
If you're wanting to play standard hymns in a more orchestral setting, check out "Soft 8 Ballad", "Love Movie", and "Love Ballad".
Then for the even wider range of Christian music, such as current worship songs and contemporary Christian music, these styles are adaptable: "Serenade", "Unplugged Ballad 2", "Slow Mood", "Groove Ballad", "Slow Beat", "8 Beat Analog", "Take Beat", and "Pop Ballad".
Yamaha has specific styles dedicated to worship and gospel - and I believe Rikki has converted some of those to Korg. You might want to check with her.
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Tim Schaeffer
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YAMAHA CVP-509 / Korg Pa300