1 Nephi 11:30

And it came to pass that the angel spake unto me again, saying: Look!

And I looked, and I beheld the heavens open again,

and I saw angels descending upon the children of men;

and they did minister unto them.

And I looked, and I beheld the heavens open again,

again - 11 occurrences in 9 verses - 1 Nephi 10:3, 14,   11:20, 26, 30, 31, 32, 35, 36