To be a child means to owe one's existence to another, and even in our adult life we never quite reach the point where we no longer have to give thanks for being the person we are.
What the Father gives is the capacity to be a self, freedom, and thus autonomy, but an autonomy which can be understood only as a surrender of self to the other.
In Christ, for the first time, we see that in God himself there exists--within his inseparable unity--the distinction between the Father who gives and the Gift which is given (the Son),but only in the unity of the Holy Spirit.
Mary thus learns that the Most High has ever borne a Son in his bosom, and that this Son has now chosen her bosom as dwelling-place.
Her (Mary's) Son first had to be the Child of the Father in order then to become man and be capable of taking up on his shoulders the burden of a guilty world.
It is to the Cross that the Christian is challenged to follow his Master: no path of redemption can make a detour around it.
Only the Christian religion, which in its essence is communicated by the eternal child of God, keeps alive in its believers the lifelong awareness of their being children, and therefore of having to ask and give thanks for things.