Today, the liturgy of the Word invites us to think of the wonderful example St. Joseph gives us. He was extremely sensitive towards Mary, his betrothed.
There is no doubt that both were excellent people, in love with each other like no other couple. However, it is plain to see that the Almighty wanted their love to go through some very demanding circumstances.
The Pope saint John Paul II has written that «Christianity is a surprise from a God who has taken sides with his creature». As a matter of fact, He has taken the initiative: To come to this world He has not waited for us to deserve it. He proposes His initiative; He does not impose it upon us: It is as though God asked us for “permission”. To Mary He proposed —never imposed anything!— the vocation of being the Mother of God: «He, who had the power to create everything from nothing, had refused to rebuild what had been desecrated if Mary had not agreed to it» (Saint Anselm).
But God, not only is asking us for permission, He also wants us to take part in His plans, to make a heroic contribution. And so it was for Mary and Joseph. In fact the Christ-child needed parents. Even more so: He needed his parent's heroism, for they had to go to extremes to defend the life of the “little Redeemer”.
What is really beautiful is that Mary revealed only a few details of her childbearing: Such an important fact is reported in just two verses (cf. Lk 2:6-7). On the other hand, she was more explicit when speaking of Joseph's thoughtfulness towards her. The fact was that «before they lived together, she was found to be pregnant through the Holy Spirit» (Mt 1:19), and in order not to risk discrediting her, he would have preferred to disappear discretely and to renounce her love (something that was socially unfavorable to him). Thus, before the law of charity had been proclaimed, Saint Joseph was already practicing it: Mary (and his loving attentions with her) was his law.