'Thorn' in the Bible

They shall come, and shall all rest in the desolate valleys, in the clefts of the rocks, on all thorn hedges, and on all pastures.

Instead of the thorn shall come up the fir tree; and instead of the brier shall come up the myrtle tree: and it shall be to Yahweh for a name, for an everlasting sign that shall not be cut off."