The picture is that of pulling people from a fire before they start to burn. Alternate translation: "doing for them whatever needs to be done to keep them from dying without Christ. This is like pulling them from the fire" (See: [[rc://en/ta/man/jit/figs-metaphor]])
Jude exaggerates to warn his readers that they can become like those sinners. Alternate translation: "treating them as though you could become guilty of sin just by touching their clothes" (See: [[rc://en/ta/man/jit/figs-hyperbole]])