until an arrow pierces his liver.
He is like a bird rushing into a trap;
and he does not know that his life will end. Bible see other translations

“until an arrow pierces his liver.” The snare holds the stag until it can be killed, but here the thought is brought over and applied to the man as well. He is led astray (Prov. 7:21) and becomes like an ox going to the slaughter, like a stag caught in a snare about to be killed by an arrow. But the text is such that it can be the man who is pieced by the arrow and killed, and this is confirmed in Proverbs 7:26. The woman’s sin “pierces” the man, who dies. By his willing participation in evil, he eventually becomes evil and suffers the consequences.

Commentary for: Proverbs 7:23