There is an additional Bible passage that utilizes an almost identical Hebrew word. I Chronicles 4:22 mentions a Jewish ruler of the region of Moab who was named Saraph. One can only speculate why he would have been given this name, but the region he ruled to the southeast of Israel proper (on the border of Edom) was quite close to the area where the Israelites had encountered the serpents in the wilderness. It is likely that the New Testament also referenced these fiery winged seraphim when writing to the Hebrews: “Who maketh his angels spirits, and his ministers a flame of fire” (Hebrews 1:7). The emphasis then, it would appear, is on the saraph’s bright, fiery nature.
Passing example: North Korea’s latest missile over Japan. We exhausted the possibilities for yammering on the last such lune-shot. Now that “Rocket Man” shows he really has both the means and the will to trigger an international conflagration, words fail us. So we ignore it. The story slipt “below the fold” to accommodate the latest jejune terror attack in Europe, and the posturings of our Hollywood stars. Stephen Colbert, who is no threat to anyone in his right mind, currently gets more airplay than Kim Jong-un. Verily, Kim Kardashian beats him out in this morning’s Google-count.