ADJ.
slow
VERB + GOSPELLY
contained, continues, haunting
adj
Resembling gospel music
When we reach the piano, Ormus sits down and starts to play a slow, haunting gospelly tune.
adv
In the manner of the Gospel
The Ceremonies cease, but yet the Creede / Contained therein, continues gospelly, / That make my feeble Spirits will grow frim.
i Register
In some senses, gospelly is marked as archaic. Watch for register when choosing this word.