I am reading a book right now called "Moments With Christ." It's a devotional I bought in college but somehow got buried in the millions of other books in my house. It pointed out something I had never noticed before about Mary.
Luke 1: 26 - 34: "In the sixth month, God sent the angel Gabriel to Nazareth, a town in Galilee, to a virgin pledged to be married to a man named Joseph, a descendant of David. The virgin's name was Mary. The angel went to her and said, "Greetings, you who are highly favored! The Lord is with you."
Mary was greatly troubled at his words and wondered what kind of greeting this might be.
But the angel said to her, "Do not be afraid, Mary, you have found favor with God. You will be with child and give birth to a son, and you are to give him the name Jesus. He will be great and will be called the Son of the Most High. The Lord God will give him the throne of his father David, and he will reign over the house of Jacob forever; his kingdom will never end."
"How will this be," Mary asked the angel, "since I am a virgin?"
The author of the book postulates that in that one sentence, Mary has already displayed her willingness. She is already acknowledging that it will "be." She has already made herself available, she is just asking about logistics.
Sometimes God asks us to do things that don't make sense. And it's okay to ask about logistics. Mary got her answer right away- that's not going to always be the case. We aren't even guaranteed to know while we are on earth (i.e. Job) why things happen. I just hope that when the rubber meets the road I stick it out even if I can't see where I am going.