Spirits in Prison

1 Peter 3
17 For it is better, if the will of God be so, that ye suffer for well doing, than for evil doing.
18 For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
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.
21 The like figure whereunto even baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,) by the resurrection of Jesus Christ:
22 Who is gone into heaven, and is on the right hand of God; angels and authorities and powers being made subject unto him.

First Question
What were some of important points contained in the Sermon on the Mount?

Second Question
What were some of the important points made by Jesus when he preached to the Spirist in Prison?

I have spent a lot of time studying this passage. For some odd reason, studying it makes me feel closer to reality that is Jesus.