Psalms 62:4
They have counseled only to thrust him down from his high position; They delight in falsehood; They bless with their mouth, But inwardly they curse. Selah.
Proverbs 27:6
Faithful are the wounds of a friend, But deceitful are the kisses of an enemy.
Jeremiah 9:8
"Their tongue is a deadly arrow; It speaks deceit; With his mouth one speaks peace to his neighbor, But inwardly he sets an ambush for him.