Some Said that It Thundered

In today's Gospel, St. John notes that when the people heard the Father's voice from heaven, "some said that it thundered."  The voice said that the Father had already glorified his name and that he would glorify it again.  In the 77th Psalm it is written that the voice of God's thunder was in the heaven, and this in connection with the Exodus.  So then, the voice from heaven in St. John's Gospel connects that redemption, itself a foretelling, with Jesus' redemption of the world on the cross.  The sermon.