2 Samuel 2:22

And Abner said again to Asahel, Turn thee aside from following me: wherefore should I smite thee to the ground? how then should I hold up my face to Joab thy brother?

Cross-reference

2 Samuel 3:27 Historical context

In 2 Samuel 3:27, Joab kills Abner in revenge for Asahel — fulfilling Abner's fear of facing Joab after killing his brother.

Proverbs 29:1 warns that ignoring repeated reproof leads to sudden destruction—Asahel's stubbornness here exemplifies that.