Instead of the thorn shall come up the fir tree. "Briars and thorns" were to overgrow the unfruitful vineyard, according to Isaiah 5:6; and to cover the land of God's people, according to Isaiah 32:13. This would be literally the case to a large extent, while the land was allowed to lie waste. The literal meaning is not, however, the whole meaning, or even the main meaning, here. "Briars and thorns" represent a general state of wretchedness and sin. The "fir" and "myrtle" represent a happy external condition of life, in which men "do righteously." It shall be to the Lord for a name. This "regenerated creation" will show forth the glory of God to mankind at large, and "get him a name" among them (comp. Isaiah 63:12; Jeremiah 13:11). For an everlasting sign. It will also he to God himself an enduring sign of the covenant of peace which he has made with his people, not to hide his face from them any more, but to have mercy on them "with everlasting kindness" (Isaiah 54:7-10).
HOMILETICS