"In it only a few people, eight in all, were saved through water, and this water symbolizes baptism that now saves you also - not the removal of dirt from the body but the pledge of a good conscience toward God. It saves you by the resurrection of Jesus Christ," NIV translation
This passage starts off by reminding us that only eight people survived the flood (judgment). This was a picture of what was to come as Jesus described the narrow gate (Matt.7:13 & 14). They went through the water and were saved as a picture of baptism. Peter is reminding us that this baptism does not remove the dirt (sin) but is a pledge (response) to that salvation. It is a first step in obedience to Jesus Christ as the Lord of our lives. We are not baptized to be saved but are baptized because we are saved.
"who has gone into heaven and is at God's right hand - with angels, authorities and powers in submission to him." NIV translation
This can be a very comforting verse of scripture for us as Christians. Not only did Jesus redeem us from our sins but He is also at God's right hand speaking on our behalf. All power and authority has been given to Him and He is on our side! Everything must submit to His command and He is looking out for us!