Therefore you are to tell them that this is what the LORD, the God of Israel, says: ‘Every wineskin shall be filled with wine.’
Jeremiah is to say that every wineskin will be filled with wine, though the people reply as if the statement were obvious.
This verse opens the sign by exposing the hearers' shallow confidence.
12Therefore you are to tell them that this is what the LORD, the God of Israel, says: ‘Every wineskin shall be filled with wine.’ 13And when they reply, ‘Don’t we surely know that every wineskin should be filled with wine?’ then you are to tell them that this is what the LORD says: ‘I am going to fill with drunkenness all who live in this land— the kings who sit on David’s throne, the priests, the prophets, and all the people of Jerusalem. 14I will smash them against one another, fathers and sons alike, declares the LORD. I will allow no mercy or pity or compassion to keep Me from destroying them.’”