One of the results of sin is a disruption of peace: the peace we were meant to enjoy with God and one another. in this passage we see how God has restored that peace through Jesus, who creates a whole new, peaceful humanity in Himself.

Resources:

Ephesians 2:11-22

The Letter to the Ephesians, Commentary by Peter T. O’Brien

Ephesians For You, Richard Coeker

Bloodlines: Race, Cross, and the Christian, John Piper