I believe certainly that God can reach us wherever we are. In the valley or on the mountain. Every place is an opportunity to meet God.
I have used the Bridge illustration so many times, as well as the Plan Of Salvation, and the 4 Spiritual Laws and many other ways to try to reach people and communicate the Good News of Jesus. I think the U Illustration and its relation to Psalm 23 gives us an interesting view.
But how can we share about Jesus to others without using the Scripture or mentioning the Bible in everything we say? There are lots of people outside that do not believe in the Bible. How can we reach to them?