In order to be strong in the Lord’s strength, Christians need to put on the whole armor of God.
The conclusion to the first half of Ephesians is a prayer for believers to have strength to know Christ’s love.
In his greeting, Paul previewed coming attractions in the rest of the letter, including the main event of Christ’s humiliation and exaltation.
To be ready for Jesus’ coming, we need to be doing what he has already told us to do.