MAL 3:5

5 And I will come near to you for mishpat; and I will be a swift ed [(witness)] against the mekhashfim [(sorcerers)], and against the mena'afim [(adulterers)], and against false swearers, and against those that oppress the hireling in his wages, the almanah [(widow)], and the fatherless, and that turn aside the ger from his right, and fear not Me, saith Hashem Tzva'os.