In this chapter, Paul encourages that you put God before the world. He teaches about the unity of believers. It talks about how we recieved spiritual blessing in Christ. We have been chosen, and redeemed (verse 1:13). We have been sealed and given the Holy Spirit. We are given spiritual wisdom.
Yes we as believers have to be united together and we are by and through Christ. God picked us and we are deemed special and he has already bought and paid for us. Even before he world was made he knew us and picked us, set us apart. He views us a faultless and that is so important for us to view us the same way. With the Easter season just behind us we can see and reflect back on it and the price he paid for us. Really just love verse 17. Its just a great prayer that we can have for people. So simple yet so elegant and important and meaningful and can make such a difference I believe if we were to pray this for people on a daily basis