How slowly the divine purpose was revealed--the trial before the promise--did not know where, nor that Canaan was land, but only told enough for his first march.
So with us--our ignorance of future is meant to have the effect of keeping us near God and training us to live a day at a time.
God's finger on the page points to a word at a time. Each day's route is given morning by morning in the order for the day.