4 occurrences across the corpus

King James Version

Isaiah 64:2

As when the melting fire burneth, the fire causeth the waters to boil, to make thy name known to thine adversaries, that the nations may tremble at thy presence!

1 Enoch

1 Enoch 1:6

Great fear and trembling shall seize them, even to the ends of the earth. The lofty mountains shall be troubled, and the exalted hills depressed, melting like a honeycomb in the flame. The earth shall be immerged, and all things which are in it perish; while judgment shall come upon all, even upon all the righteous:

OT Pseudepigrapha

Testament of Levi 2:2

Because when the rocks are being rent, and the sun quenched, and the waters dried up, and the fire cowering, and all creation troubled, and the invisible spirits melting away, and Hades taketh spoils through the visitations of the Most High, men will be unbelieving and persist in their iniquity.

4 Maccabees 4:8

For as our father Aaron, armed with the censer, ran through the massed congregation against the fiery angel and overcame him, so the son of Aaron, Eleazar, being consumed by the melting heat of the fire, remained unshaken in his Reason.