# God has given them a spirit of dullness, eyes so that they should not see, and ears so that they should not hear

This is a metaphor about the fact that the people are spiritually dull. They are not able to hear or receive spiritual truth. (See: [[rc://en/ta/man/jit/figs-metaphor]])

# spirit of

Here this means "having the characteristics of," such as the "spirit of wisdom."

# eyes so that they should not see

The concept of seeing with one's eyes was considered to be equivalent to gaining understanding.

# ears so that they should not hear

The concept of hearing with the ears was considered to be equivalent to obedience.