Strong H5530 סָכָל sâkâl · fool

Jeremiah

1. Jeremiah 4:22
   For my people is foolish, they have not known me; they are sottish children, and they have none understanding: they are wise to do evil, but to do good they have no knowledge.
2. Jeremiah 5:21
   Hear now this, O foolish people, and without understanding; which have eyes, and see not; which have ears, and hear not: