A stranger is someone who is different, alone, out of place, and doesn't fit. The world is filled with strangers because what truly makes someone strange is being a stranger to God. Christians are no longer strangers because they've been brought near to God through Christ. They can see a face and hear a voice that no one else can see or hear. Christians can also know that they're no longer a stranger because their strangeness is gone. Christ is now real to them in a way that He never was before. They're no longer strangers to Christ because Christ is no longer strange to them, but rather He's glorious and lovely to them.