Solomon
Proverbs 1:18ESV·traditional attribution

but these men lie in wait for their own blood; they set an ambush for their own lives.

Matthew Henry Presbyterian @wholebiblehenry

Here Solomon gives another general rule to young people, in order to their finding out, and keeping in, the paths of wisdom, and that is to take heed of the snare of bad company. David's psalms begin with this caution, and so do Solomon's proverbs; for nothing is more destructive, both to a lively devotion and to a regular conversation (Pro 1:10): "My son, whom...

Commenting on Proverbs 1:10-19

John Gill Reformed Baptist @doctorgill

And they lay wait for their own blood,.... While they lie in wait for the blood of others, they lie in wait for their own; and when they shed the blood of innocent persons, it in the issue comes upon their own heads, and is the cause of their own blood being shed; vengeance pursues them, and justice will not suffer them to live; they...

Geneva Bible Notes Reformed @genevanotes

And they lay wait for their [own] blood; they lurk privily for their [own] lives. (o) He shows that there is no reason to move these wicked to spoil the innocent, aside from their malice and cruelty.