In many churches, the message of justification- how to get right with God- is preached over and over again. But much less is said about sanctification- how to live after you're converted.

A part is always too limited to explain the whole. You might picture a worldview as trying to stuff the entire universe into a box. Invariably, something will stick out of the box. Its categories are too "small" to explain the world.

The most fundamental decision we all face over the course of our lives is what we will recognize as the ultimate reality, the uncaused source and cause of our existence. Everything else in our worldview depends on that initial decision. The Bible speaks of this foundational choice in terms of who or what we worship. We must all answer the challenge Joshua issued to the Israelites as they were poised to enter the Promised Land: "Choose this day whom you will serve" (Josh. 24:15).

Redemption is as comprehensive as Creation and Fall. God does not save our souls while leaving our minds to function on their own. He redeems the whole person. Conversion is meant to give new direction to our thoughts, emotions, wills and habits.

Only a God of love is fully personal. Thus the Trinity is crucial for maintaining a fully personal concept of God. As theologian Robert Letham writes, “Only a God who is triune can be personal.... A solitary monad cannot love and, since it cannot love, neither can it be a person.” Therefore it “has no way to explain or even to maintain human personhood.

Christian adults need to think about talking to our own children as a form of cross-cultural missions. Cultural change happens so quickly that teens are exposed to ideas and worldviews very different from those of previous generations.

Beginning under the Roman Empire, intellectual leadership in the West had been provided by Christianity. In the middle ages, who invented the first universities - in Paris, Oxford, Cambridge? The church.