To prepare for this weekend's Mass, you might like to reflect on these lovely words from the second reading:
Think of the love that the Father has lavished on us,
by letting us be called God’s children;
and that is what we are.
Because the world refused to acknowledge him,
therefore it does not acknowledge us.
My dear people, we are already the children of God
but what we are to be in the future
has not yet been revealed;
all we know is, that when it is revealed
we shall be like him
because we shall see him as he really is.