To divide; break or tear apart.

Oh that thou wouldest REND the heavens, that thou wouldest come down, that the mountains might flow down at thy presence. 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! ( Isaiah 64:1-2 )

Dictionary of Words from the King James Bible. Public Domain. Copy freely.