Ephesians 3:10 – 11 "His [God's] intent was that now, through the church, the manifold wisdom of God should be made known to the rulers and authorities in the heavenly realms, according to his eternal purpose that he accomplished in Christ Jesus our Lord."
For some reason I have never really given much attention to those words "in the heavenly realms". They are unique to Ephesians and repeated several times through the letter.
I get a mental picture of all the heavenly hosts watching the earth as God's manifold wisdom is being revealed there with Jesus Christ at the center.
And it is being revealed through the church, the body of Christians as Paul describes it this letter.
And it is being revealed now, after Christ's resurrection and ascension, and before His return.
Basically God is making His Christ-centered, manifold wisdom known to all the eternal beings through Christians on earth.
Paul describes this in chapters 4 – 6 of Ephesians.
The surprising thing is that he describes the stuff of everyday living: our attitude towards each other; our relationship with our husband or wife; our relationship with our kids; our relationships with superiors or inferiors.
In other words, he describes the stuff we would call mundane. The stuff we do without thinking most of the time. The stuff we often try to get through to get to the more exciting things. And yet those "more exciting things" only warrant a single mention in the whole book (4:11). In addition, those who perform the "more exciting things" are not exempt from these basics and it is actually their duty to build up others to do these basics.
So it appears to be the "mundane" in Christ that God is using to make His manifold wisdom known to the heavenly hosts, according to his eternal purpose that he accomplished in Christ Jesus.
So when you wake up tomorrow morning know that there is nothing mundane about your life. In Christ there is nothing mundane about the breakfast you prepare for your family, or the breakfast you are served. In Christ there is nothing mundane about a kiss good morning or a kiss goodbye, nothing mundane about packing the kids off to school or sitting at your desk in the office. There is nothing mundane in the hug you give your spouse or your kids when you get home (or when they get home).
You are participating in the revelation of the manifold wisdom of God according to His purpose in Jesus Christ.
Enjoy it!