Today's second reading, from Ephesians, reveals the mystery of God's Church as the New Chosen People.
Looking at the beginning of the reading, one sees again the idea of selection, of God's Will for a People. In verse 3, St. Paul immediately refers to God the Father giving us a special blessing through and in Christ. Verse 4 indicates that those in the Church are chosen from all time, referring to God's Will for those in the Church to become holy, and perfect--"unspotted". Verse 5 is even more specific, when the great Apostle of the Gentiles uses the word, "predestinated" or predestined. This is not a poetic word-choice, but the reality of God's predilection.
"According to the purpose of his will" cannot be a clearer statement that God, in Christ, calls the members of the Church on purpose, from all time, to holiness.