The Apostle Paul passes from the relation to the whole to the relation to the individual.  In the oneness of the body, etc., there is room for diversity, and no one is overlooked; each has his own position. (Driver, Plummer, and Briggs; The International Critical Commentary, (1991, T. & T. Clark, Edinburgh), Pg. 110)

Matthew has created an inclusion that marks out a basic theme: the presence of the exalted Lord with his church establishes his as Immanuel, as God with us." 'Immanuel' means 'God with us', and finds its echo Jesus' promise at the very end of the Gospel: 'I am with you always' (Matthew 28:20).

Christianity is not a mere theory, which leaves men at liberty in relation to their practice: it is a religion which requires its votaries to have their whole souls brought into subjection to it, and cast, as it were, into its very mold: and those who affect not a conformity to its doctrines, will deny the doctrines themselves; having no alternative, but to set aside the requirements, or to condemn themselves for their disobedience to them. (Simeon, C. (1833)).

The ethical objective of the Christian as presented by the author of Ephesians is to develop a pattern of life, which is appropriate to one who has become a child of God (5:2).  This involves laying aside the old self and putting on the new (4:17-24) and walking no longer in the darkness under the control of the enemy (2:6-14; cf. 2:2), but walking in the light. (Arnold, 1989)