1 Timotius 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 

1 Timotius 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,

[1:7]  ¹ tn The Greek reinforces this negation: “understand neither what they are saying nor the things they insist on…”