The Sixth Wonder of Calvary: The Rending of the Temple Veil

The sixth wonder receives little notice in the immediate context (Matthew 27:50-51), but the Apostle Paul makes effective use of the fact when he instructs Hebrew Christians in the superiority of the Gospel over the Law of Moses (Hebrews 6:19-20; 9:1-14). What is the significance of the veil of the temple being torn from top to bottom?