The Lord hath not called thy name Pashur - Security on all sides. This name thou hast had, but not by Divine appointment.
But Magor-missabib - Fear on every side. This name hath God given thee; because, in the course of his providence, thou shalt be placed in the circumstances signified by it: thou shalt be a terror to thyself.
Magor-missabib - See Jeremiah 6:25 note. Jeremiah uses it no less than five times, having probably adopted it as his watchword from Psalm 31:13.