Upon examining it you find that it has intricate parts which...

Upon examining it you find that it has intricate parts which all work together to serve a common purpose of telling time. It has hands that must be placed just so upon a face that must be numbered just so and inside are a multitude of gears and cogs which all must be placed in just such a way and be of just such a size. It has to be made from certain materials and not others. Now imagine that you had never before seen a watch until that very instant.

What would be your natural conclusion, that the watch was created by someone to serve a purpose, or that it had come together on its own through a random accumulation of atoms and molecules as physics and geology permitted over time? When it is put that way, it may seem very silly to imagine that the watch did not have a creator with a purpose in mind. Well, then, what of the universe? It, too, has numerous intricate parts which all work together in such a way as to perform certain functions.

For our existence to take place, we require that the universe expanded in uneven clumps that led to distinct galaxies. The matter has to have arranged in such a way that stars could form, and then lots of stars had to live out their life spans so that we could have the heavier chemical elements.

And those have to have traveled through space and massed themselves together into a roughly spherical thing called Earth that then has to have formed around a class-M star within a very narrow range of distances to allow for a proper environment for life. This Earth had to rotate at just such a rate so that temperature did not get too cold or hot one side or the other. It had to be tilted for proper weather.

Water has to have found itself on this planet in abundance and then, some not-yet-understood circumstances have to have taken place to allow for the beginning of life. Next, this life has to have somehow found the way to sustain itself, and has to have found a food supply and shelter. And then it figured out how to reproduce itself, and to adapt to other environments, and then some of it became man and acquired the power of reason….

Look at all the pieces (and I know I am missing quite a few) that had to come together in order for us to exist. And we would imagine that it was all by chance? It only makes sense that there is a Creator of the Universe and of us, just like it only makes sense that there is a creator for the watch. The Universe is a sign of its Creator, and you also are a sign of your Creator.