'Treacherous' in the Bible

Also let none waiting on Thee be ashamed, Let the treacherous dealers without cause be ashamed.

And Thou, Jehovah, God of Hosts, God of Israel, Awake to inspect all the nations. Favour not any treacherous dealers of iniquity. Selah.

I have seen treacherous ones, And grieve myself, Because Thy saying they have not kept.