We are all Children of God

This is from today's first reading:

You must see what great love the Father has lavished on us
by letting us be called God's children --
which is what we are!
The reason why the world does not acknowledge us
is that it did not acknowledge him.
My dear friends, we are already God's children,
but we shall be in the future has not yet been revealed.
We are well aware that when he appears
we shall be like him,
because we shall see him as he really is. 1 John 3:1-2

I've always had a fondness for this Gospel passage because it was read at my first communion. All these years later and I still remember! It is a passage with such implications. We are children of God! What more could we possibly ask for? At the same time, it holds such promise for the future - a future that we can only imagine, and yet our imaginings can not even begin to fathom the glory that awaits us.