I grew up attending a Primitive Baptist Church where my grandfather preached. We sang a cappela from a hymnbook called "The Good Old Songs". Many of the pieces in this book go back to the time of Isaac Watts but in this collection few few authors, if known, were credited. One of the hymns, titled "Watchman", had a word that I have wondered over many times through the years : "Then the jubil trumpet sounding shall awake from earth and sea all the saints of earth now sleeping clad in immortality." I always assumed this was a dialect word, short for jubilant, but never knew. Some of my friends--Hicks-- from Beech Creek in the next county used the words "jobal" hunter in their variant of the ballad about the wild boar. This was their hearing of the word "jovial". In Appalachian dialect, which derives mainly from the traditional speech of Great Britain, "o's" and "u"s are frequently substituted for each other as in "bumb" for "bomb", "dunkey" for "donkey", etc. although the o in ""jobal" is long o.
    I doubt whether the singers of these songs over the generations put any worry or special significance as to this words meaning although it is very interesting to me to learn so much fascinating history and possible origins to "jubal".