1 Timothy 1:7

1:7 They want to be teachers of the law, but they do not understand what they are saying or the things they insist on so confidently.

1 Timothy 1:13

1:13 even though I was formerly a blasphemer and a persecutor, and an arrogant man. But I was treated with mercy because I acted ignorantly in unbelief,

1 Timothy 6:4

6:4 he is conceited and understands nothing, but has an unhealthy interest in controversies and verbal disputes. This gives rise to envy, dissension, slanders, evil suspicions,