Ephesians 1 explains who we are as believers and how did we get where we are now. Like Paul's apostleship, we who are faithful in Christ are so "by the will of God". We were chosen by Him according to the kind intentions of His will, predestined to be His sons, redeemed by grace through Christ's blood, and "blessed with every spiritual blessing in Christ". This position that we are now in has been "sealed in Him with the Holy Spirit of promise", by the surpassing greatness of His power. I pray , with Paul, that the eyes of our hearts might be enlightened, so that we would know what is the hope of His calling, and understand the riches of the glory of His inheritance for us. We need to both 1) understand the position God had put us in and all that is ours in Christ, and also 2) be aware of our need for all that He has given us in Christ.