The seraphim (fiery, burning ones) are angelic beings associated with the  prophet Isaiah’s vision of God in the Temple when God called him to his  prophetic ministry (Isaiah  6:1-7). Isaiah  6:2-4 records, “Above him were seraphs, each with six wings: With two wings  they covered their faces, with two they covered their feet, and with two they  were flying. And they were calling to one another: ‘Holy, holy, holy is the Lord  Almighty; the whole earth is full of his glory.’ At the sound of their voices  the doorposts and thresholds shook and the temple was filled with smoke.”  Seraphs are angels who worship God continually.

Isaiah chapter 6 is the  only place in the Bible that specifically mentions the seraphim. Each seraph had  six wings. They used two to fly, two to cover their feet, and two to cover their  faces (Isaiah 6:2).  The seraphim flew about the throne on which God was seated, singing His praises  as they called special attention to God’s glory and majesty. These beings  apparently also served as agents of purification for Isaiah as he began his  prophetic ministry. One placed a hot coal against Isaiah’s lips with the words,  “See, this has touched your lips; your guilt is taken away and your sin atoned  for” (Isaiah 6:7).  Similar to the other types of holy angels, the seraphim are perfectly obedient  to God. Similar to the cherubim, the seraphim are particularly focused on  worshipping God.