After encouraging the Ephesians to have unity and describing the area for unity, Paul begins a discussion of what God has done to help Christians achieve and maintain this unity by describing the one who gives the gifts, namely Christ, the Ascended One (Ephesians 4:7-10).
It should be noted that the first gift given is grace, and that, to “each one of us.” The “us” are those who have become a Christian, including Paul. The grace given was “according to the measure of Christ’s gift.” This is not some miraculous gift, but rather something Jesus (and His Father) wanted to do for mankind, with no partiality. This gift does not vary with individuals, but rather is the same gift to all those who have accepted salvation from the consequences of their disobedience to God.