To understand Ephesians 2 you need to read the rest of the Bible. v 15  -  One new man - the Christian. Christ died on the cross to fulfill the Old Testament and bring in the New Testament. v 8 & 9 - learn these two verses.  You cannot save yourself;  Christ saves us.  We come through faith - faith in Christ. v 10 - if you get saved and nothing happens,  you're a liar.   It's not about what you get right; it's about what God molds you into by what you do through your life  journey. This passage speaks of what we were like before we came into the kingdom of God.   By faith in Christ Jesus we are saved.  We are citizens of God's kingdom now.  v 1-3 - Pauk used 4 ways to describe how we were before coming to Christ: - dead to Christ (spiritually dead); - followed the ways of the world; - followed the ruler of this world  (devil); - gratify the cravings of the flesh. Sometimes we go back to these things.   Life is a journey and we walk (or run) this journey.