We live by faith, not by sight.
2 Corinthians 5:7 NIV
Most of us try to get through life on human wisdom. Some of us succeed. Others of us make so many mistakes that we die with many regrets. If only we could get guidance from above, we would get this "life" stuff right. If only we could hear the voice of the One who knows. If only.
The truth is that we can. The Voice has spoken. His words are available to us. But there's a catch. We have to be willing to obey it. Otherwise, we won't have what Jesus calls "ears to hear." Those who obey what they already know of God have their ears opened to more; and those who have ears open are readily obedient.
The root of the problem is that most of us have trouble with obedience. We lose our "ears to hear," and as a result, we fall back on human wisdom. Our lives never match those of the biblical heroes. Why? Human wisdom would not have pushed Abraham up a hill to sacrifice his son; it would not have led God's people to the edge of the Red Sea with an army in pursuit; it would not have marched around Jericho seven times and blasted a trumpet for the wall to fall.
Really, when it comes to it, would you prefer to live by the human logic that results from losing your ears to hear? Or would you prefer the cutting-edge, risky-but-real life of a true, radical believer? The answer isn't clear for everyone. But we've seen who lasts. Your Bible is full of their stories. They lived by faith, not by sight.