"The Incarnation imprints on us an attitude toward relationships. Jesus says, I want fellowship with you. The test that you know what Christmas is about is that you become more desirous of intimate personal relationships with other people and better at getting them, because the Incarnation is the secret of good personal relationships.When two people are different culturally and linguistically, how are they going to have a relationship? One must learn the other's language, speak in a broken dialect, and become vulnerable and weak. If you enter into another person's world you become weak; the other person keeps the power. But then you have a relationship.
If you follow the way of Jesus you say, "I will not work so much on being understood but on understanding. I will not work so much on getting my needs met but on meeting needs. I will work on entering into her or his world and giving that person what they consider love, not what I consider love." Incarnation, if it's imprinted in you, if you see what Jesus Christ has done, is going to make you unbelievably good at personal relationships."
Tim Keller, The Purpose of Christmas