Jeremiah 16:8

Thou shall not also go into the house of feasting
Which it was lawful to do, and which the prophet doubtless had done at other times; but now a time of calamity coming on, it was not proper he should; and the rather he was to abstain from such places, and from pleasant conversation with his friends, to assure them that such a time was coming, and this his conduct was a sign of it; for which reason he is forbid to attend any entertainment of his friends, on account of marriage, or any other circumstance of life, for which feasts were used: to sit with them to eat and to drink:
which not only expresses the position at table, but continuance there; for at feasts men not only eat and drink for necessity, or just to satisfy nature, but for pleasure, and unto and with cheerfulness; which may lawfully be done, provided that temperance and sobriety be preserved; but the prophet is not allowed to do that now, which at other times he might do, and did; and that on purpose that his friends might take notice of it, and inquire the reason of it, the distress that was coming upon them, as the words following show.