(Jubilees 10:13) The angels here are again sharing good knowledge. Like in the Book of Tobit, the information being shared can be deemed good knowledge because it is valuable information that can help protect Noah’s grandsons from the demons. The information shared is being used for a good, honorable cause. Also, the knowledge disclosed here is good knowledge because it is revealed by good angels who are obeying God and doing as He instructs them to do. They do not act on their own accord, and they are sharing this information with only pure, holy, and good intentions, hoping to help Noah, help his grandsons.