NCC Question 23
Question 23: Why must the Redeemer be truly God?
Answer: That because of his divine nature his obedience and suffering would be perfect and effective; and also that he would be able to bear the righteous anger of God against sin and yet overcome death.
The New Testament clearly presents Jesus Christ as God the Son incarnate, the Redeemer of the world. Here's a helpful memory device that summarizes the NT evidence for Christ's deity: