Colossians 2:9 proclaims that “in Him [Christ] dwells all the fullness of the Godhead bodily.” Bodily refers to the man Jesus Christ with a human body. Fullness is not only the riches of the Godhead but the expression of these riches.*
John 1:16 declares that “of His fullness we have all received, and grace upon grace.” We have received not merely grace but grace upon grace that we may become one with Him in expressing the Triune God, starting now and advancing to New Jerusalem.
This corporate expression is presented in Ephesians 1:22-23, which says the church “is His Body, the fullness of the One who fills all in all.” Through the enjoyment of Christ’s riches [Eph. 3:8], we become His fullness to express Him.**
Ephesians 3 presents an ascending path to this fullness. In answer to prayer, God strengthens us (v. 16), Christ makes His home in us (v. 17), we get rooted and grounded in love (v. 17), we apprehend Christ’s vastness (v. 18), we know His love (v. 19), and we are filled unto all the fullness of God (v. 19). The conclusion is glory to God forever (v. 21), which clearly points to New Jerusalem.
Besides our prayer according to the pattern in Ephesians 3, chapter 4 sets forth our practice. The ascended Christ gave gifted members (v. 8-11); we cooperate by receiving their ministry to be perfected (v. 12) so that we all can share in the work of the ministry for building up (v. 12) until we all arrive “at a full-grown man, at the measure of the stature of the fullness of Christ” (v. 13). Ephesians 4 is for now, so don’t passively wait until New Jerusalem.