Jeremiah 35:6 ” But they replied, ‘We do not drink wine, because our forefather Jonadab son of Recab gave us this command: Neither you nor your descendants must ever drink wine.’ “

The Lord had directed Jeremiah to invite the Recabite family in and serve them wine.  But when he did, they responded with this covenant they had kept for generations.  None of them had ever drank wine.    The Lord then used this example to show how the Recabites had continued to uphold their forefather’s commandment…yet the people of Judah and Jerusalem couldn’t seem to  keep God’s commandments.