It's been taught that Christianity is basically like other religions — but Christianity is like nothing else. Everyone who has really become a Christian has had a sense of being awakened from some kind of sleep by an outside force. You thought you understood Christianity, but now you realize, "How radical! How new! How different!" A radical change has to happen inside.

What does it mean to be a real Christian? A real Christian is someone who is called. What does it mean to be called? 1) You sense a power coming in from outside taking charge; 2) You are confronted with a person, not a lot of intellectual ideas; and 3) You rise and follow him.

This sermon was preached by Dr. Timothy Keller at Redeemer Presbyterian Church on September 10, 1995. Series: Matthew 9. Scripture: Matthew 9:9-13.

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