'Foolish' in the Bible

But everyone who hears these words of Mine and doesn’t act on them will be like a foolish man who built his house on the sand.

Five of them were foolish and five were sensible.

When the foolish took their lamps, they didn’t take olive oil with them.

But the foolish ones said to the sensible ones, ‘Give us some of your oil, because our lamps are going out.’