Seraphim

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ISAIAH 6:2  

Above him stood the seraphim. Each had six wings: with two he covered his face, and with two he covered his feet, and with two he flew.

"The prophet Isaiah tells us that the seraphim are six-winged “fiery” angels who surround God as He sits upon His exalted throne and who worship God continually (Isaiah 6). The seraphim also minister to the Lord and serve as His agents of purification, as demonstrated by their cleansing of Isaiah’s sins before he began his prophetic ministry." 

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