These seraphim are the highest of the seven revealed orders of local universe angels. They function in seven groups, each of which is closely associated with the angelic ministers of the Seraphic Corps of Completion.
Close in meaning, found by a language model. A match does not mean the teachings are the same.
“Now this is the order of those who have kept the ways of the Most High, when they will be separated from their mortal body. In the time that they lived in it, they painfully served the Most High, and were in jeopardy every hour, that they might keep the law of the lawgiver perfectly. Therefore this is the teaching concerning them: First of all they will see with great joy the glory of him who takes them up, for they will have rest in seven orders. The first order, because they have labored with great effort to overcome the evil thought which was fashioned together with them, that it might not lead them astray from life into death. The second order, because they see the perplexity in which the souls of the ungodly wander, and the punishment that awaits them. The third order, they see the testimony which he who fashioned them gives concerning them, that while they lived they kept the law which was given them in trust. The fourth order, they understand the rest which, being gathered in their chambers, they now enjoy with great quietness, guarded by angels, and the glory that awaits them in the last days. The fifth order, they rejoice that they have now escaped from that which is corruptible, and that they will inherit that which is to come, while they see in addition the difficulty and the pain from which they have been delivered, and the spacious liberty which they will receive with joy and immortality. The sixth order, when it is shown to them how their face will shine like the sun, and how they will be made like the light of the stars, being incorruptible from then on. The seventh order, which is greater than all the previously mentioned orders, because they will rejoice with confidence, and because they will be bold without confusion, and will be glad without fear, for they hurry to see the face of him whom in their lifetime they served, and from whom they will receive their reward in glory. This is the order of the souls of the just, as from henceforth is announced to them. Previously mentioned are the ways of torture which those who would not give heed will suffer from after this.”
In the year that King Uzziah died, I saw the Lord sitting on a throne, high and lifted up; and his train filled the temple. Above him stood the seraphim. Each one had six wings. With two he covered his face. With two he covered his feet. With two he flew. One called to another, and said, “Holy, holy, holy, is Yahweh of Armies! The whole earth is full of his glory!”
After these things I looked, and the temple of the tabernacle of the testimony in heaven was opened. The seven angels who had the seven plagues came out, clothed with pure, bright linen, and wearing golden sashes around their chests.