Jeremiah 39:6 - Matthew Poole's English Annotations on the Holy Bible

Thus the stubbornness of this prince and his nobles proved the ruin of his family, and of themselves, and of the whole people. The nobles were great authors of this mischief, and brought Zedekiah into that obstinacy which he showed to the prophet's admonitions and exhortations, upon them, therefore, a more exemplary punishment is taken. The Hebrew calls the nobles white men, either from their white garments, or from that candour of spirit which should be found in persons of their quality.