What I notice most in Ephesians 3 is Paul's statement that Gentiles are now fellow members of the people of God.
The people of God were never a people defined by genetics. King David's great-grandmother Ruth, for example, was a Moabite.
Now the mystery of God's redemptive plan is to be revealed to everyone.
Related to Brief Commentary on Ephesians 3
Writings Related to Brief Commentary on Ephesians 3