Jeremiah 5:15 in the King James Version
Lo, I will bring a nation upon you from far, O house of Israel, saith the LORD: it is a mighty nation, it is an ancient nation, a nation whose language thou knowest not, neither understandest what they say.
Context
14 Therefore the LORD, the God of Armies says, “Because you speak this word, behold, I will make my words in your mouth fire, and this people wood, and it will devour them.
15 Behold, I will bring a nation on you from far away, house of Israel,” says the LORD. “It is a mighty nation. It is an ancient nation, a nation whose language you don’t know and don’t understand what they say.
16 Their quiver is an open tomb. They are all mighty men.