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).
Wool
Wool is everyday cloth in Scripture, and its verses are small and practical. The capable woman of Proverbs “seeketh wool, and flax, and worketh willingly with her hands” (Proverbs 31:13). The Law asks that “the first of the fleece of thy sheep” be given to the priest (Deuteronomy 18:4), and it gives careful rules for a woollen or linen garment marked by a spreading greenish or reddish patch (Leviticus 13:47-52). Ezekiel scolds shepherds who “clothe you with the wool” yet “feed not the flock” (Ezekiel 34:3): the same wool, taken without care for the sheep.
11 verses
Leviticus
The garment also that the plague of leprosy is in, whether it be a woollen garment, or a linen garment;
Whether it be in the warp, or woof; of linen, or of woollen; whether in a skin, or in any thing made of skin;
And if the plague be greenish or reddish in the garment, or in the skin, either in the warp, or in the woof, or in any thing of skin; it is a plague of leprosy, and shall be shewed unto the priest:
And the priest shall look upon the plague, and shut up it that hath the plague seven days:
And he shall look on the plague on the seventh day: if the plague be spread in the garment, either in the warp, or in the woof, or in a skin, or in any work that is made of skin; the plague is a fretting leprosy; it is unclean.
He shall therefore burn that garment, whether warp or woof, in woollen or in linen, or any thing of skin, wherein the plague is: for it is a fretting leprosy; it shall be burnt in the fire.
This is the law of the plague of leprosy in a garment of woollen or linen, either in the warp, or woof, or any thing of skins, to pronounce it clean, or to pronounce it unclean.
Ye shall keep my statutes. Thou shalt not let thy cattle gender with a diverse kind: thou shalt not sow thy field with mingled seed: neither shall a garment mingled of linen and woollen come upon thee.
Deuteronomy
The firstfruit also of thy corn, of thy wine, and of thine oil, and the first of the fleece of thy sheep, shalt thou give him.
Proverbs
She seeketh wool, and flax, and worketh willingly with her hands.
Ezekiel
Ye eat the fat, and ye clothe you with the wool, ye kill them that are fed: but ye feed not the flock.
From Easton's Bible Dictionary
Matthew George Easton, 1897