God is in the uncertainty business! God told Abraham to leave his hometown with all the comfort and security of family. He did NOT tell Abraham where he would end his journey, how he would arrive, or when his journey would be completed!
The fear of the unknown is real! We like to know where we are going, how to get there and how long it will take, before we leave. It would be much easier if we had a 'LIFE' GPS to let us know the destination, the most safe route and the fastest way to get there, but that does not happen.
A friend of mine wrote a song called "Daily Bread" (Joe McCutchen). One stanza of the song says, "Daily Bread, coming down from Heaven every morning, like He said, He gives us what we need to keep us going, but not so much that we don't come back and need Him every day..."
Trust is required, not the knowledge of the trip, its difficulties or any short-cuts. What we need for this 'once-in-a-lifetime' trip is the trust that comes from the knowledge of the One who created us, directs us, ensures our success in His purpose for our lives, and Loves us more than anyone else could ever love us. Only then can we have peace about the uncertainty of the journey.
Have a good Trip!