choice. Isaiah is not silent in the following verses; he openly confesses his sin and recognizes that the consequences of his sinfulness will be his own destruction. Although “uncleanness” (ṭĕmēʾ) is often used of ritual unworthiness to come into the presence of God, the later atonement of Isaiah (6:7) removes his guilt and sin, not just his ritual uncleanness. Thus the lips seem to represent the expressions of a sinful heart that is not pure. Psalm 15 provides a detailed list of prerequisites