I noted from an earlier question that, according to Mormons, the "Sons of God" that married "daughters of men" in Genesis 6 were human males.
Based on this I had wanted to ask about three New Testament passages that seem to refer to some wrong actions committed by spirit beings or angels.
The passage at 1 Peter 3:19,20 seems to say that the action happened at the time of Noah:
19 By which also he went and preached unto the spirits in prison; 20 Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
The passage at 2 Peter 2:4,5 seems to say pretty much the same as above, but refers to the creatures as "angels" rather than "spirits":
4 For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment; 5 And spared not the old world, but saved Noah the eighth person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;
And the passage in Jude 6 and 7 seems to relate their action to the fornication and "going after strange flesh" in Sodom and Gomorrah:
6 And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day. 7 Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
Possibly related to above passages (but not part of this question) is this one in 1 Corinthians 6:3:
Know ye not that we shall judge angels? how much more things that pertain to this life?
What wrongful action by spirit beings do these passages refer to?