13. thorn—emblem of the wicked (2Sa 23:6; Mic 7:4).
fir tree—the godly (Isa 60:13; Ps 92:12). Compare as to the change wrought, Ro 6:19.
brier—emblem of uncultivation (Isa 5:6).
myrtle—Hebrew, Hedes, from which comes Hedassah, the original name of Esther. Type of the Christian Church; for it is a lowly, though beautiful, fragrant, and evergreen shrub (Ps 92:13, 14).
for a name … everlasting sign—a perpetual memorial to the glory of Jehovah (Jer 13:11; 33:9).