What event does Sydney remember as he walks the streets the night before Darnay is retried? What words does he recall? (From Book 3 Chapters 6-10)

Carton remembers the words spoken at his father's funeral.

".... when he had been famous among his earliest competitors as a youth of great promise, he had followed his father to the grave. His mother had died, years before. These solemn words, which had been read at his father's grave, arose in his mind as he went down the dark streets, among the heavy shadows, with the moon and the clouds sailing on high above him. "I am the resurrection and the life, saith the Lord: he that believeth in me, though he were dead, yet shall he live: and whosoever liveth and believeth in me, shall never die."