The author of the Book of Mormon tried hard to make it sound like the King James Bible. Way too hard, in fact. Here's what Mark Twain said about it:

Wherever he found his speech growing too modern -- which was about every sentence or two -- he ladled in a few such Scriptural phrases as "exceeding sore," "and it came to pass," etc., and made things satisfactory again.

Exceedingly

1:10, 1:17,
2:13, 16, 17,
3:2, 11, 14, 26,
6:10, 13, 21,
7:4,
8:7, 12, 15, 21,
12:12,
19:3(2),

Mark Twain's Look at Mormonism (Roughing It)