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

1:29,
4:6,
7:4, 26(2),
12:7,
13:3(2), 12,
15:3, 5,
17:2, 28,
18:2, 5,
19:10, 22, 28,
20:26, 29(2),
22:21,
24:2,
25:17,
27:2, 18,
29:15,
32:5, 12, 15,
34:40,
35:15,
36:20, 24, 25,
43:21, 43 (2),
44:16, 18, 21,
45:1(2), 24,
46:2, 6, 7,
47:2,
48:12,
49:5, 9, 17, 26, 27, 30,
50:18(2), 28,
51:14(2),
52:33, 35,
53:4, 5, 11, 20,
54:2,
55:26, 33,
56:10, 52,
57:26, 36,
58:19, 24, 29,
59:1(2), 7(2), 11,
60:3, 6, 9, 11, 14(3), 26,
61:3,
62:1, 2, 6, 19, 24, 29, 30(2), 35, 37, 41, 48, 49,
63:5,

Mark Twain's Look at Mormonism (Roughing It)