The “mystery” is a secret that God kept in His heart until He told it to Paul! This secret is that God was going to have a bride for His beloved Son, the Lord Jesus.
V.6 The mystery is here divided into three things. (a) that the Gentiles should be heirs, a person who inherits something, with the Jews. (b) They and the Jews who believe are in one body. (c) They would share together the promises made by God in Christ in the gospel.
V.7-13 Paul had been given the wonderful work of making known the gospel, that good news of God. To tell of the unsearchable riches of Christ!
V.14-21 So now we come to Paul’s second prayer the “NOW” prayer. Let’s listen in on what he said. To begin with, he starts differently, “the Father of our Lord Jesus Christ.” Why? Because the Lord Jesus is there as the Son of God.
V.19 The emphasis here is on the intimacy of communion, and as our NOW being “filled even to all the fullness of God.” It is God filling us NOW with Himself. This closeness is overwhelming but its real. Verse 16 tells us we are strengthened with might by His Spirit Who is in us NOW. “That Christ may dwell in your hearts” NOW.
V.17 We’re “rooted and grounded in love” NOW. Were inside a cube, “breadth, and length and depth and height” with God NOW. We “know the love of Christ” which is beyond knowledge! NOW.
V.19 He is able to do exceeding abundantly above all we could ask or think” NOW.
V.20 “According to the power that works in us” NOW. Does this cause you to overflow with thanksgiving and praise giving HIM the glory, NOW? (v. 21).