Proverbs 7:23

till an arrow pierces his liver ¹  – like a bird hurrying into a trap, and he does not know that it will cost him his life. ² 

Nu 25:8,9; Pr 1:17; Pr 9:18; Ec 9:12

¹ sn The figure of an arrow piercing the liver (an implied comparison) may refer to the pangs of a guilty conscience that the guilty must reap along with the spiritual and physical ruin that follows (see on these expressions H. W. Wolff, Anthropology of the Old Testament).

² tn The expression that it is “for/about/over his life” means that it could cost him his life (e.g., Num 16:38). Alternatively, the line could refer to moral corruption and social disgrace rather than physical death – but this would not rule out physical death too.