Paul here encourages the Ephesians to not only walk in the light but to be a light in a world of darkness.

Paul here give the Ephesians an exhortation to walk as followers of God, not partaking in the ways of non-believers. 

Paul is describing sanctification in these verses. Believers put off the old man and walk by the Spirit as God strengthens the inner man.

Paul describes the unity of the Body of Christ which is a common thread throughout the entire Bible including the Old Testament.

Paul describes how we can be familiar with the love of Christ - that it can be seen and felt.

Paul describes the result of being adopted in the Body of Christ which is boldness and access to Him through faith.

Paul reminds the Ephesians that they were once gentiles in the flesh before being adopted into the Body of Christ.

These verses contain perhaps the most debated verses in the Bible. Here Paul articulates going from being spiritually dead to fully alive.

Paul describes prayers for spiritual wisdom which which ultimately ends in a description of the power of Jesus Christ.

Paul opens his letter with the gospel by describing the Father's many spiritual blessings in the heavenly places in Christ.