The tongue is a restless evil, full o deadly poison. This was the realization of Isaiah. He recognized that he was not alone in his dilemma. He understood that the whole nation was infected with dirty mouths: "I live among a people of unclean lips." in the flash of the moment Isaiah had a new radical understanding of sin. He saw that is was pervasive, in him and in everyone else.
( R.C. Sproul )
[ The Holiness of God ]
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