'Malignant' in the Bible

He must then examine the infection on the seventh day. If the infection has spread in the garment, or in the warp, or in the woof, or in the leather -- whatever the article into which the leather was made -- the infection is a malignant disease. It is unclean.

He must burn the garment or the warp or the woof, whether wool or linen, or any article of leather which has the infection in it. Because it is a malignant disease it must be burned up in the fire.

then the priest shall come in and make an inspection. If he sees that the mark has indeed spread in the house, it is a malignant mark in the house; it is unclean.