Charles H. Spurgeon on Psalms 139:19

Depart from me therefore, ye bloody men. The expression, "bloody men", or "men of blood", includes not only homicides, who shed human blood, but all other wicked and evil doers, who injure, or seek to injure others, or who slay their own souls by sin, or the souls of others by scandal; all of whom may be truly called homicides; for hatred may be called the mainspring of homicide, and thus St. John says, "Whoso hateth his brother is a homicide." —Robert Bellarmine.