Small gift, big meaning

On my last day to be with my friends
I was given a small gift to mark the end
It was a Rubik's cube.
I kissed his cheek to say goodbye
Up 'til that point I'd asked God "Why?"
My eyes started to slightly well
Until something he started to tell:
Everything happens for a purpose
So let God guide you his way
It may not go the way
You want it to be
But it will turn out good
Just wait and see.