Their tongue is an arrow shot out; It speaks deceit; One speaks peaceably to his neighbor with his mouth, But in his heart he lies in wait.
Jeremiah 9:8
Surrounding context
9:7 Therefore thus says the LORD of hosts: "Behold, I will refine them and try them; For how shall I deal with the daughter of My people?
9:8 Their tongue is an arrow shot out; It speaks deceit; One speaks peaceably to his neighbor with his mouth, But in his heart he lies in wait.
9:9 Shall I not punish them for these things?" says the LORD. "Shall I not avenge Myself on such a nation as this?"