lo

[[t]lo͟ʊ[/t]]

CONVENTION (emphasis)

Lo and behold or lo is used to emphasize a surprising event that is about to be mentioned, or to emphasize in a humorous way that something is not surprising at all. [HUMOROUS or LITERARY]

He called the minister of the interior and, lo and behold, within about an hour, the prisoners were released...

I looked and lo! every one of the fifteen men who had been standing with me had disappeared.