Hoss
>>Can God die? If so, He is not eternal, and thus not God?<<
When it is said that God died on the Cross the human nature of Jesus dies. However, since Jesus is one person both God and Man what is experienced in his humanity is experienced in his divinity. Similarly, the value of his sacrifice is given infinite value because of this communicability. Otherwise, only a man died on the Cross and not God.
If this were not so John would err when he says The Word became Flesh Jn 1:14.