From Vatican Information Service:
The fact of the Incarnation, of God who makes himself man like us, shows us "the unprecedented reality of divine love. God's action, in fact, is not limited to words. Rather, we can say that He is not satisfied with speaking but immerses himself in our history and takes upon himself the worry and the weight of human life. ... God's way of acting is a strong stimulus for us to ask ourselves about the reality of our faith, which should not be limited to the arena of feeling, of the emotions, but must enter into the concrete reality of our existence, must touch, that is, our everyday life and orient it in a practical way. ... Faith has a fundamental aspect that affects not only our mind and our heart but all of our life."
Citing the Church Fathers again, the Pope observed that on numerous occasions Jesus was compared with Adam, even to the point of calling Him the "second Adam", or the definitive Adam, the perfect image of God. With the Incarnation of the Son of God a new creation occurs, which gives a complete answer to the question 'who is man?' ... Only in Jesus is God's plan for human being fully revealed: He is the definitive man according to God."