Chapter 10 (What Does The Bible Really Teach) - Spirit Creatures—How They Affect Us

I'm into chapter 10 of “What Does The Bible Really Teach?”

8 In Noah’s day, other angels rebelled against Jehovah. They left their place in God’s heavenly family, came down to the earth, and took on fleshly bodies. Why? We read at Genesis 6:2: “The sons of the true God began to notice that the daughters of men were beautiful. So they began taking as wives all whom they chose.” But Jehovah God did not allow the actions of these angels and the resulting corruption of mankind to go on. He brought upon the earth a global flood that swept away all wicked humans and preserved only his faithful servants. (Genesis 7:17, 23) Thus, the rebellious angels, or demons, were forced to abandon their fleshly bodies and return to heaven as spirit creatures. They had put themselves on the side of the Devil, who thus became “the ruler of the demons.”—Matthew 9:34.

9 When the disobedient angels returned to heaven, they were treated as outcasts, like their ruler, Satan. (2 Peter 2:4) Although they are now unable to take on human bodies, they still exercise a very bad influence over humans.

Where does scripture say these rebellious angels returned back to heaven?