Easton's Bible Dictionary

Wool - one of the first material used for making woven cloth (Lev. 13:47, 48, 52, 59; 19:19). The first-fruit of wool was to be offered to the priests (Deut. 18:4). The law prohibiting the wearing of a garment "of divers sorts, as of woollen and linen together" (Deut. 22:11) may, like some other laws of a similar character, have been intended to express symbolically the separateness and simplicity of God's covenant people. The wool of Damascus, famous for its whiteness, was of great repute in the Tyrian market (Ezek. 27:18).