“The eyes of your understanding being enlightened; that ye may know what is the hope of his calling, and what the riches of the glory of his inheritance in the saints”. Ephesians 1:18
God desires us as His own particular possession and portion, and ultimately as those who are to share His glory. Look again at Paul’s prayer for the Ephesian church in Ephesians 1. It is that they may know what is “the hope of his calling, and what the riches of the glory of his inheritance in the saints” (verse 18). To talk about God’s “inheritance in the saints,” the God who made everything and to whom all things belong and by whom all things are, to talk in this way is the most amazing and daring piece of anthropomorphism that Paul ever produced, and yet he has put it like that in order to give believers an understanding of it. What he means is that these are the people in whom God delights and whom God is going to enjoy.
Let me give an illustration in order to make this point clear. Take a child who has many toys, all of which he likes. Yes, but there is one particular favorite, the toy that is always with him. The child is fond of them all, but that one is something special. And it is the same with us. We all have certain possessions that we prefer to others; there is always something especially dear and of interest to us. That is the idea—that the great Lord of the universe has a special object of interest and affection—His own people, those whom He has taken and, as Paul puts it in writing to the Galatians, separated out of this evil world and put into a special category and compartment. That is the whole message of the Bible—God preparing for Himself a people who are going to be His joy throughout eternity. – Dr. Martyn Lloyd-Jones