FAITH

Christianity is dependent on faith. Not the kind of faith that means that "Yes" I believe in the trinity and the other 21 items on a particular doctrinal statement. Not the kind of faith that uses God as a vending machine to get what we want. In lot of ways both of those ideas are closer to control which is the opposite of faith. Faith is trusting God. Trusting God means not having the answers most of the time, not knowing the "why" of your particular situation, and still carrying on anyway. Trusting God can't happen if we don't really trust God.

Hebrews 11:8-10By an act of faith, Abraham said yes to God's call to travel to an unknown place that would become his home. When he left he had no idea where he was going. By an act of faith he lived in the country promised him, lived as a stranger camping in tents. Isaac and Jacob did the same, living under the same promise. Abraham did it by keeping his eye on an unseen city with real, eternal foundations—the City designed and built by God.
11-12By faith, barren Sarah was able to become pregnant, old woman as she was at the time, because she believed the One who made a promise would do what he said. That's how it happened that from one man's dead and shriveled loins there are now people numbering into the millions.
13-16Each one of these people of faith died not yet having in hand what was promised, but still believing. How did they do it? They saw it way off in the distance, waved their greeting, and accepted the fact that they were transients in this world. People who live this way make it plain that they are looking for their true home. If they were homesick for the old country, they could have gone back any time they wanted. But they were after a far better country than that—heaven country. You can see why God is so proud of them, and has a City waiting for them.

Trusting is one of the hardest things to do. Its a risk. No guarantees. No control. We have to take God at his word and even then his words often seem too few.