lo /ləʊ $ loʊ/
interjection[
Language: Old English;
Origin: la]
1. old use used to tell someone to look at something that is surprising
2. lo and behold spoken used before mentioning something surprising that happened – used humorously:
We had just been talking about John when, lo and behold, he walked into the room. [TahlilGaran] Dictionary of Contemporary English ▲