'Deal Treacherously' in the Bible

Woe to thee that layest waste, and thou wast not laid waste; and dealest treacherously, and they dealt not treacherously with thee! when thou shalt cease to lay waste, thou shalt be wasted; and when thou shalt make an end to deal treacherously, they shall deal treacherously with thee.

Thou art of purer eyes than to behold evil, and canst not look on iniquity: why lookest thou on them that deal treacherously, and keepest silence when the wicked devoureth the man that is more righteous than he?

Have we not all one father? hath not one God created us? why do we deal treacherously every man against his brother, by profaning the covenant of our fathers?

And did he not make one? Yet had he the residue of the spirit. And why one? That he might seek a godly seed. Therefore take heed to your spirit, and let none deal treacherously against the wife of his youth.