1 Nephi 4:5

And it was by night;

and I caused that they should hide themselves without the walls.

And after they had hid themselves,

I, Nephi, crept into the city and went forth towards the house of Laban.

And it was by night;

was - 40 occurrences in 30 verses - 1 Nephi 1:1, 8, 9, 12, 15,   2:3, 8, 11,   3:8, 13, 25, 28,   4:5, 6, 7, 8, 9, 10, 16, 26, 28, 30, 35,   5:1, 2, 7, 14, 16, 17, 22