Flax is a plant of the genus Linum that is cultivated for its seeds and for the fibers of its stem i.e. from Linum comes linen. Flax was known throughout Bible History. The first specific mention of flax in the Holy Scriptures was at the time of the Exodus when the flax of Egypt was destroyed by the plague of hail. Among many other things, linen, made from flax, was used for both the Christ's swaddling clothes ("swaddling" literally means "a gown or narrow strips of cloth for an infant") and for His burial wrappings (which the Holy Scriptures say were not a single cloth; see Shroud Of Turin: A Miraculous Fake?).
"for the barley was in the ear, and the flax was bolled"
In the time of the Exodus, the flax of Egypt was among the crops destroyed by The Ten Plagues at the time "the barley was in the ear, and the flax was bolled." The term "bolled" refers to that the rounded seed-bearing capsules of the flax plant were present on the plants. The same term is used for cotton.
"And Moses stretched forth his rod toward heaven: and The Lord [see YHVH, Adonai, Jehovah, LORD] sent thunder and hail, and the fire ran along upon the ground; and The Lord rained hail upon the land of Egypt. So there was hail, and fire mingled with the hail, very grievous, such as there was none like it in all the land of Egypt since it became a nation [see also The Ancient Egyptians]. And the hail smote throughout all the land of Egypt all that was in the field, both man and beast; and the hail smote every herb of the field, and brake every tree of the field. Only in the land of Goshen, where the children of Israel were, was there no hail."
"And Pharaoh sent, and called for Moses [see also The Education Of Moses] and Aaron, and said unto them, I have sinned this time: The Lord is righteous, and I and my people are wicked. Entreat The Lord (for it is enough) that there be no more mighty thunderings and hail; and I will let you go, and ye shall stay no longer."
"And Moses said unto him, As soon as I am gone out of the city, I will spread abroad my hands unto The Lord; and the thunder shall cease, neither shall there be any more hail; that thou mayest know how that the earth is The Lord's. But as for thee and thy servants, I know that ye will not yet fear The Lord God."
"And the flax and the barley was smitten: for the barley was in the ear, and the flax was bolled." (Exodus 9:23-31 KJV)
Rahab used harvested stalks of flax to hide the two scouts that Joshua had sent into Jericho:
"And Joshua the son of Nun sent out of Shittim two men to spy secretly, saying, Go view the land, even Jericho. And they went, and came into an harlot's house, named Rahab, and lodged there."
"And it was told the king of Jericho, saying, Behold, there came men in hither to night of the children of Israel to search out the country. And the king of Jericho sent unto Rahab, saying, Bring forth the men that are come to thee, which are entered into thine house: for they be come to search out all the country."
"And the woman took the two men, and hid them, and said thus, There came men unto me, but I wist not whence they were: And it came to pass about the time of shutting of the gate, when it was dark, that the men went out: whither the men went I wot not: pursue after them quickly; for ye shall overtake them. But she had brought them up to the roof of the house, and hid them with the stalks of flax, which she had laid in order upon the roof." (Joshua 2:1-6 KJV)
Fact Finder: Linen is made from flax. How was linen used during the times of the Old and New Testaments?