Meaning of LO in English

LO

Lo and behold or ~ 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, ~ and behold, within about an hour, the prisoners were released...

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

CONVENTION emphasis

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .